Honestly, I've bumped into more self righteous pricks that arent tanks. DPSer can be the worst d-bags at times, often voicing their opinion about the "bad tank".

They dont understand that this isnt your fluffy easy happy-go-lucky-braindead tank game like WoW and every other WoW type trinity MMO. You dont have a instant i-win taunt button in this game, if you dont let the tank get to build aggro before opening up, then the risk is that the tank will have a hard time getting aggro back. Provoke, flash and all other enmity skills do just that, build enmity, they wont force the target to attack you for x-seconds so you can build hate, or fill the enmity meter to 100%.

I've seen plenty of bad dps just stand there and blast blast blast after the tank has lost aggro due to premature dpsing. Then the dps throws a fit.

I'm a mellow tank, but I wont take shit from some numbnut dps that cant handle his enmity and blaming me.