Would you kick a tank that couldn't keep hate and let the mobs run all over killing people? Would you kick a healer that didn't keep people's hp above zero? Why should DPS get to hakuna matata their way through dungeons mashing 4 keys and completely ignoring mechanics? I mean, as a tank or a healer I'll go remove totems from the circle for the DPS so they can keep doing their job, but if I'm doing more damage than they are then I should have every right to leave them to pick up their own. Honestly, in that case they should be picking up mine too. :P
Everyone should be reasonably expected to follow dungeon mechanics. Not doing so is basically thumbing your nose at the other three people stuck with you in the dungeon and telling them you don't give enough of a crap about their time to even do things properly. I'm not talking about messing up here - everyone messes up sometimes - but blatantly ignoring mechanics over and over again will just get you a (well-earned) vote kick. There's nothing abusive about it. You're not pulling your weight. You're making the dungeon take longer, and just generally implying that you're too lazy to do much more than queue, accept, and set yourself to "follow" in the first room. I queue so that I can get my daily tomes, not so I can carry other people for theirs while they play with their phone or watch tv.
I don't think my expectations are at all out of line here. I don't expect people to be perfect. I don't expect everyone I run into to put out Savage-quality damage. What I do expect is that people will at least put forth a modicum of effort to make clearing the dungeon a reasonable proposition. If they don't, then they get the Weakest Link treatment. I have yet to be talked to by a GM about "abusing" the vote kick system this way, but if I was I would have no problem telling the GM exactly why the player was removed from the dungeon. If you're going to be kicking back and expecting the other three people to carry your dead weight, don't bother queueing.