The 'unwritten rule' for non-tank pulls in dungeons

[SoulEchelon]

I'm sorry, but if a tank can't pull their weight in normal dungeons, I'm not going to leave - I'm going to remove the tank.

Then good luck with the tank queue. It's a rare proc, and this current negative mentality towards tanks is the exact reason why.

Edit: I would instead propose working with the tank if by chance (as Vahlnir stated above) they're having trouble with the mechanics of a dungeon. That probably means they're either new to the dungeon or a new tank. Being instantly negative and demanding them to be kicked isn't motivation. It's detrimental, and could potentially lead to one less tank and quite possibly, one less player. We should be working together, not hurting each other. But hey - gotta get through that dungeon in 10 minutes flat or everyone but you sucks and deserves to be banned from ever playing with you again, right?