Well, first of all it's frankly impossibly difficult to distinguish between people who genuinely believe in the things they're saying, people who don't but say these things out of a perception that they're acceptable, and people who don't but say them to get a reaction. Attempts at lumping all of those into a single group and one-dimensionally analyzing are doomed to failure.

Second, SRS is... well. SRS is actually kind of a good example of that problem: it started out as a bunch of guys parodying (among other things) stereotypes of radical feminism for the lulz, and then picked up some people who went along because they took the posts seriously and as a sign that it was OK, and also picked up some true believers. Now it's impossible to tell those groups apart, and it's mostly just as shitty as everything else these days.