Not everyone wants to play the game your way, and they are free to do that. It cuts both ways. If you don't like how people are playing, and are unwilling to deal with what you get in a PUG, then you're the problem. Some content pretty much can't be done without PUG's. When I get Rabanastre, I know it's going to be a mess of people missing mechanics, and scale back DPS. Contrast that with Dun Scaith, where I'm still seeing entire parties fall off the ship at the beginning, but after that few or no raise's needed. If someone does not like the queue time, they are free to level a tank and see exactly what a tank does and perhaps realize it's not as easy as it looks, in trade for instant-queues for half the content. -That- is why I feel we keep seeing squishy impatient tanks.
What really gets me are on the 24-player content where people zerg the content. Yes it's not very healing intensive now, but it used to be, and you keep seeing people ignoring meteors, pads, floating... all mechanics that later appear in later content. You're not going to stand around waiting for someone to eat dirt.