Oddly, that site is one of the three main game forums I read the most, Mongoose Traveller and this one being the others. I ignore most of the non gaming stuff. The Pundit keeps most of his comments in his section, the off-topic stuff is usually clearly labeled. Most of the game discussion seems focussed on actual play. I try to ignore what I find offensive, and try not to add to it.
That said, I sometimes find the, uh... candor of the site funny. Was it Will Rogers who said, "Anything is funny, as long as it happens to someone else"?
From what I gather, some of the members had been banned from Rpg.net, for what they felt were trivial or arbitrary reasons. They, Pundit foremost, deliberately made the ethos of the site no holds barred. I believe the tough talk is a deliberate choice, a matter of style, and don't take it personally.