I think the whole "PUA community" is just a stepping stone. A lot of these guys will eventually sort out the good from the insecurity ridden propaganda and begin to make their own way.
The problem is the one eyed man is king in the land of the blind. You might have a guy with a half dozen good beliefs that allow him some marginal "success" with women, yet his life is still very unsatisfying and his "results" with women even leave much to be desired, but to some poor soul out there who is at rock bottom, this guy is seen as being the almighty. Therefore, you have people copying people who are in need of some serious help themselves. The same is true for every field. Some of those self help writters don't have any expertise in the field they write, yet again, the one eyed man is king in the land of the blind. The best thing that can be done is the educational system overhauled to make sure everyone knows how to verify source credibility and why this is an important task, but for now we live in an era where people think citing wikipedia and taking advice from middle-aged guys whose credentials largely consist of banging escorts and 400lbs women is trustworthy research...sigh.