YPYT is griefing. Tank role is not "puller" role
This is just a FYI, but tanking does not mean you are the only one allowed to pull mobs in a dungeon. The game is designed to stop you from pulling too many mobs. You can not physically pull more than a group can handle either.
I've seen a handful of people get small bans for griefing the party by refusing to tank as well which is unfortunate for them.
If you want full control of your dungeon experience there are trust dungeons available to you, but when you player with others and you want to be the one that controls everything then you are going to have a bad time.
When you enter a dungeon the goal is to complete the duty. If you do anything to intentionally not complete the duty than you are breaking ToS by becoming a bad actor.
Things like RP walking on purpose so others die to mobs
Refusing to hit buttons so that people die to mobs
removing tank stance and shirking other players so that they die.
Running away from the enemies as the tank in an effort to not engage with them.
Straight up refusing to play the game until you get your way. This is the biggest red flag, you will 100% get in trouble for this.
These are all offenses that can get you small bans. This is also reinforced in the novice network's training simulations. The dps jobs pull mobs for the tank in those training sims.