I have long since admitted to my anarchist peers that anarcho-primitivism is my least favorite form of anarchism. I admit it: I'm openly "cosmopolitan", which is to say that I'm pro-technology, I'm pro-city and I favor the general integration of society. The cliche of the primitivist who tries to argue with you on the internet is a classic by now - it certainly is an obvious type of performative contradiction (although, as has been brought to light in my overview of Stefan Molyneux's and Hans Hoppe's approach to libertarianism, I do not think that such performative contradictions constitute a proof or disproof in and of themselves). In a sense, anarcho-primitivism is the most radical position on the "anarchist spectrum" because it goes the furthest in terms of what it opposes, to the point of opposing the very notion of cities, agriculture, a large chunk if not the entirety of modern technology and the importation of resources in general.
I do recognize that there is somewhat of a distinction between primitivism and the movement known as "anti-civ", although the two also overlap for obvious reasons (and I've always found the "anti-civ" definition of civilization to be a semantic misnomer, but that's beside the point). I also recognize both an overlap and distinction between anarcho-primitivism and "green anarchism". When I attack primitivism, I'm not necessarily attacking the "green" paradigm. This clarification is necessary so that I am not misconstrued as attacking something that I'm not. My issue of contention is specifically with primitivism, not comparatively moderate "green" and "self-sufficiency" movements. I am not defining primitivism here as a mere tendency to favor agrarianism or localist self-sufficiency per se, although the extent of overlap should be kept in mind.
One of the obvious hallmarks of primitivism, in my view, is that it tends to assume a romantic view of older societies, which is a trait that I associate with conservatism (except the primitivists seem to want to "turn back the clock" much further than political conservatives). This is basically derived from Rousseau's myth of "the noble savage", which could be thought of as a sort of secular garden of eden notion. Primitivists tend to portray tribal societies as peaceful, egalitarian utopias when in reality they often were rife with violence and living standards were generally horrible compared to that of the average modern man. To be clear, I do not think it makes sense to jump to the opposite extreme of apologizing for colonialism and to assume that "the west" is somehow magically uber-superior, but the primitivist line tends to be equally absurd in the other direction. Both the romanticization of nature and the Hobbesian "war of all against all" are nonsensical.
In contrast to the backward-looking (and hence conservative) nature of primitivism, I like to emphasize what I have called "a progressive view of history", which essentially calls for a low time preferance view of history that emphasizes dynamism and social evolution and is opposed to traditionalism and the romantisization of the past (and present). This view simultaneously tries to avoid collapsing into futurist-utopianism, while emphasizing that "turning back the clock" is either impossible or undesirable (or both). While the future should not be predicted as a utopia, neither should the past or present be portrayed as a utopia. This is one of the fairly important senses in which I am opposed to conservatism of any kind, and primitivism actually seems to have some potential conservative traits in this respect due to its backward-looking tendencies.
On the flip side of the primitivist coin tends to be an all-out demonization of modern technology. This may be manifested in a sort of "alienation theory of technology". I actually see a certain valid point in an "alienation theory of technology", which is to say that it is a valid point to bring up the fact that technology can have certain alienating effects that disincentivizes more personal and direct social interaction. There is a sense in which the "internet generation" has ushered in a phenomenon of "technological hermitism" (I can say this with full confidence because, to an extent, I am a technological hermit of this sort myself). One can also point out certain negative manifestations of technology, such as weapons of mass destruction. This certainly should be taken seriously, although I don't think it constitutes an argument for a problem with technology itself.
While there is something to be said for an alienating effect of certain technologies, it is an equally valid point to point out that technology can have the opposite of an alienating effect, that it makes communication and travel easier so that social interaction across long distances is increased. Technology can actually have the effect of "integrating" society. Furthermore, there is also the fact that technology has been absolutely indispensible as a factor increasing our general standard of living and the oppurtunties that we have as individuals to live our lives in many different ways. Ultimately, I think that the benefits of technology very obviously outweigh its drawbacks. And for some reason primitivism just doesn't see it that way - technology (or at least a certain stage of the developement of technology) must be inherently evil from this perspective.
One important point that I like to consider when one encounters this anti-technology sentiment is that objects are morally neutral (for objects lack volition and it is fallacious to anthropromorphize them). What matters is what people do with tools, not some sort of intrinsic good or evil to the tools themselves. Of course, certain tools can be specifically designed for doing harm, but then those very same tools can serve a defensive function. The moral emphasis on objects doesn't make much practical sense when one considers morality from the standpoint of human actions. It also seems arbitrary to draw some line for the point at which the developement of tools has "gone too far". Is using metal tips for spears "too much technology"? For god's sake! This really seems like a ridiculous question to ponder in the first place.
Exactly how far one goes in their opposition to the developement of technology basically never actually makes it to the point of actually opposing all technology, even for primitivists. Primitivism is simply the most limited/conservative view of where the cut-off-point is. Even something as simple as the production of clothing, hunting weapons, dwellings and other such basics of survival involves some level of technology. Indeed, the developement of the use of tools in place of purely "natural" functions is one of the defining features of humans. It seems to me that where primitivists choose to make the cut-off-point for technology is not only arbitrary, but incredibly limiting on human potential. Why would it be in anyone's interest to aschew the benefits of technology? When it comes down to it, the vast majority of people are not going to give it up - and for good reasons.
There's also the issue of the importation of resources. This is where primitivism is actually a crude form of protectionism and isolationism. Of course, no primitivist actually completely opposes the importation of resources on an individual level, but they tend to oppose the importation of resources on any scale much beyond that level. If one were to think of it as an absolute, it would imply the ideal that each individual is purely self-sufficient. But not only is this practically impossible once one has a decent grasp of economics, it is anti-social in the sense of reducing everyone to an economic hermit. Of course, primitivists may not exactly espouse absolute individual self-sufficiency, but they seem to tend to oppose social organization of any size beyond a small tribe - beyond which point the importation of resources is supposed to be essentially cut off.
In my view, this is an arbitrary limit on cooperation that is impossible to sustain in light of economic incentives. Furthermore, while there is a sense in which it is decentralized, it is not necessary a positive type of decentralization because it may tend to strictly bind people to a small territory or serve the function of an enclave. Not only is it potentially rife with micro-authoritarianism, but it is economically impractical when resources are needed or demanded that are not (at least adequately or fully) provided by a given enclave. At the level of "the tribe", the individual is potentially assumed to have arbitrary unchosen positive obligations, while at the level of inter-tribal relations matters are "isolationist" in the sense of radically restricting the division of labor. If I may be so bold, I'd suggest that certain elements of primitivism are actually quite conductive to the cause of ethnic nationalists with the notion of "local altruism, inter-tribal isolationism". This essentially reduces to the formula: inwardly socially compulsory and outwardly anti-social. By the term "anti-social" I generally refer to the opposition to cooperation and social integration.
My mind also makes an interesting association between primitivism and communism in a certain sense. Part of this association is actually linguistic in nature. The term "burgeousie" stems from the root "burg", which essentially means "town" or "city". In historical context, it is a referance to the medieval cities. Hence, opposition to "the burgeousie" may actually have a quasi-primitivist or proto-primitivist connotation as the opposition to the formation of cities (as a sort of concentration of commerce that goes beyond the cut-off-point favored by primitivists). The classic dichotomy between "pagans" and "villains" also works in this context, as the root of "villain" is "village" and the term "pagan" initially refered to agarians and back-woodsers. With this linguistic matter aside, however, there is also the fact that anarcho-communism and primitivism may overlap in terms of their opposition to money and the division of labor.
When push comes to shove, the problem that primitivism boils down to is the fact that it would be impossible to implement on a large scale without drastically reducing the human population and life expectancy. This is the sense in which primitivism seems to very obviously be practically absurd and undesirable. Many primitivists actually more or less admit this fact and see no problem with it. From a radically "overpopulationist" perspective, it is allegedly necessary and good. Sorry, but I'm not going to except a philosophy that potentially logically entails support for mass-genocide in order to usher in "the good society". For anarcho-primitivists in particular, however, presumably their anarchism would hold them back from forcing a primitivist scheme on the world (let alone a nation). The fact that the vast majority of people don't take primitivism seriously also holds back the possibility of it ever being implemented on a large scale.
While I am very critical of primitivism, of course I recognize the liberty of primitivists to take the initiative to live as primitivists. However, considering the historical reality of the present, it seems as if the primitivists are more or less stuck living in modern society (short of some sort of live-off-the-grid scheme in which they meaningfully isolate themselves from what they oppose). This is particularly the case since the total collapse of modern technology doesn't appear to be taking place any time soon (if at all), and the primitivists can't expect the vast majority of everyone else in the world to voluntarily give up the use of modern technology and the organized importation of resources. While this does not justify a "love it or leave it" argument, it does make primitivism highly impractical to implement, especially from the standpoint of where we are at today.