Eh, the community is fine... be nice to people (even the trolls) and they're usually nice back.
I don't understand the "back when DPS didn't matter" argument though. Kicking someone because their DPS is bad is perfectly reasonable. It shows they lack proper knowledge of their class, they can't be arsed to research their class or theory craft themselves, thus showing they couldn't be fucked putting in the effort or that they're just straight up bad.