The linux kernel is a far less dysfunctional social setup than any of the other places you mentioned (even though it's older than some of them), and I weakly su

The linux kernel is a far less dysfunctional social setup than any of the other places you mentioned (even though it's older than some of them), and I weakly suspect it's partly because of Linus's modus operandi. People notice his swearing but not who he attacks. My observation has been that he's exquisitely careful about picking his targets, always picking people who've been in the group for a while, and never attacking a noob. This sets an extremely egalitarian tone for the group: nobody is immune, and anybody can be questioned on their actions. (I'm a lot less sanguine than him, though, about the effect this confrontational ethos has on the participation of women in the group.)