And we go back to the same issue: ME, ME, ME. If the tank, or dps, or healer is not fine with it, I'm not fine with it because I got a team mentality. Dungeons are not hardcore content, my tank, dps, or healer could be having a rough day, a disability, are new, or just not at all in the mood to rush. When I queue for a roulette (I seldom run specific duns), I am fully conscious that I will be paired with randoms, who might NOT at all agree with my play style. If I get an unfortunate group, and I really do not wish to take say 15 minutes to complete the dungeon because I know I can do it in 7, I can eat a penalty, right? That's what the penalty is for: "I don't want to deal with this, and others seem fine so I will eat it".
The issue is people are coming into the dungeon with the idea that EVERYONE must play however I want to play because otherwise THEY are disrupting MY play style. I still don't get who came up with that silly rule because when there's 4 people who decides which play style takes the most importance?
So tldr; it's a team for a reason. You don't agree? Not feeling like dealing with x? /Leave, let people have their fun, go eat a sandwich and come back

Tbh, I've played long enough to have teams where a dude is insisting on wall to wall pulls despite the healer clearly struggling. I've had dungeons take over 20 minutes due to wipes when they could've been less than 15 if we did smaller pulls, but no matter how we asked the tank (or dps) would not listen.