I'm not closely familiar with the current PUA/Red Pill community, just the one of 5+ years ago when I was a bit involved with it, back when it was just a few forums and guys trying to learn from the few people who were successful. The attitude back then, which may be well disguised these days, was incredibly sociopathic - that females only belonged in men's lives from their pleasure, that you would only succeed when you stopped respecting them, and that happiness was achieved by blatantly disregarding whatever was stopping you. This is why negging was so popular as a learning technique - it taught men that there is little downside to just being as asshole to women.

The community certainly helped (and helps) a lot of men who suffer from confidence issues, but it also did/does so in a very flawed way, and threw everyone else (namely, all women) under the bus.