Not trying to be mean but I HATE tanks like that.

Pulling freaking like...1 pack of mobs at a time in acceptable gear...I'm sorry if you can't tank a dgn and don't know how to use your defensive cooldowns that's pretty much useless the whole dungeon aside "arguable" some bosses to cheese.
You shouldn't be playing tank.

Just how it is, nobody wanna be stuck in a dungeon for 40mins/ longer than they have to.

This is more so aggravating in leveling dgns, where people that don't even know how to tank are at and just playing it just to get it to 80.