Often times I will inspect a tank and they will be in either pvp gear, dps gear (and I don't mean haste/mastery), or a combination of Agi, Int, and Str gear. I'd imagine a lot of these players are new to tanking and attempting to gear an offspec. I welcome anyone to check out how tanking fun can be. Cool.
But a lot of the time these players have bad attitudes, are unwilling to contribute a meaningful amount of effort to the success of the raid, and sometimes they are just plain counter productive. I.E. Chainpulling, threat pissing contest, taunt spam, ect. And thats just to name a few...
Well, inexperienced players are nothing new, and neither are irritating players... the thing that I really can't understand is; why they are assigned MT?