Groups are spoilt with over geared Tanks with 40K unbuffed who can generate 10K TPS while watching TV. They do not like to wait, do not like to CC, do not like to have to do any work but punch the same 4 buttons over and over. They are able to do 3-6K DPS by punching those 4 buttons over and over and do not wish to have to put in any more effort than is neccissary.
you are the tank, you are supposed to gather all the mobs, hold them in one place while everyone AOE's them down. You are then to move on and grab the next pack. Any failures are your fault.
Welcome to WoW 2.0