https://support.na.square-enix.com/f...la=1&kid=68216
Two things to note about this: Intent is important, a DPS pulling can be safely assumed to have the best interest of the group, that is a quicker run through the instance, in mind, you considering that behavior uncooperative is irrelevant to that point, meanwhile, refusing to perform your textbook role, which I must stress, it's not to lead or to pull, it's to tank, is very clearly a sabotage of an individual.
I also highlighted example 1 because I don't think, and do say if you think otherwise, "I don't want to <perform my role> because I don't like how this player is acting", is meaningfully different from the example listed.