It's funny that one of the first replies is talking about how the "general opinion" here is that tanks arn't in control of the timing of a run... but folks get that view from the troll threads. Either troll threads that turn into huge arguments that the trolls pretend to win, or troll threads that nobody challenges because it's recognized as a troll thread.

Perhaps tanks ARE in need because people are tired of other people pulling enough to wipe the tank. Surely the tank knows how good, or bad they are at mitigation. Ever see the posts on that other reddit, the one the trolls banned from places hang out? They complain the most about tank + healer teams, that are carefully pulling just exactly what the tank and healer know they can handle, and ignoring the DPS who try to start fights. If the tank knows how much they can mitigate, and the healer knows how much they can heal, they still want to be the DPS that controls the speed somehow?

Over here if you see the complaint, they try to not be quite so obvious about it, but it is almost always a DPS that is doing the complaining. You almost never see a healer saying "go ahead, pull more" and being ignored, and then complaining on the forum.

So yha, of course tanking isn't happening as much. When DPS think they can just grab as much as they want, pull it back to the tank, and wipe the party because the tank wasn't pulling more then they could handle... and then the tank gets the blame for not being good enough?