Not the OP, but no, not "exclusively". But sites that espouse that principle end up attracting them in droves because they're shunned everywhere else. And the

Not the OP, but no, not "exclusively". But sites that espouse that principle end up attracting them in droves because they're shunned everywhere else. And then people who believe in free speech but don't intend to use it to be assholes don't feel comfortable there, further making those sites hives of ... well, whatever bad adjective you want to assign.