Both are centrist at best. It's simply the giant shift of society to the hard left that makes them seem "based" simply for being somewhat sane.

TiA is still full of homosexuals and trannies, 90% of whom are leftists, who regularly shill for and promote femcel-tier bullshit and faggotry. They are the definition of cognitive dissonance: for example, they point out that men and women are biologically distinct and men are naturally stronger than women, and then turn around and screech about how men and women aren't 100% equal.

PCM is similar in that socially/culturally it is leftist and generally it is very lolbertardian-biased. A MUCH higher proportion of based individuals, though, which makes some posts/comment chains extremely entertaining and bearable.