As a healer main, I believe both points so far. Tanks aren't entitled, as my husband is a tank PLD and he is definitely slow sometimes, we made a rule if someone else pulls they get punished, (Our best friend is BLK and he pulls early cause he is impatient save him at 1 health a lot for it) but yeah if its a situation where someone thinks the tank is too slow I understand letting them feel the aggro burn d: but sometimes the tanks also act a little high and mighty commanding us and getting aggressive.