Sure it is. Good thing no one is advocating such behavior.I think telling a player "no you can't do that even if the rules say you can*" is adversarial.
Absolutely right. Again, good thing no one is advocating such behavior. You'd think with all that talk of fire, those strawmen would burn down quickly. Yet here they still are!Giving adversaries additional characteristics designed to negate a character's abilities for no reason other than to negate the character's abilities is also adversarial. In other words, a fire elemental is going to be immune to fire but if all of my NPCs are suddenly immune to fire because I don't like feature X that does fire damage, I'm just being a dick.