I get how hard math is for some people but it’s really very simple. If there are 10 tanks and 100 people looking for a group 60 aren’t going to get to do a dungeon. There are ways to make it more likely that you’ll be one of the 40 winners but unless you increase the number of tanks 60 people will still not get a group. The only way to lessen a server wide shortage of tanks is to increase the number of tanks.
I’ve just hit 66, almost all of the xp from pugs. I’ve done a few quests in Hellfire and some guild runs but mostly pugs. I’m having a great time doing it “wrong.” I think I really was right when I guessed you were narcissistic.