Imo the resistances the way it were, used as healing and not just blocking damage, to the level it was, I really can't believe people thought that was normal. What other games do you play that have that mechanic?
Who said it was "normal"? What does that have to do with anything? Look at the talents and skills, they clearly have a very different take on what roles/classes/levels than other games, why should the elemental system surprise us? And from their own statements, they weren't impressed with the idea of changing that but did that because they thought players wanted it. And they botched it by doing it incompletely (broken Zombie) and without regard to people trying to get through a play-through. If they had made those changes apply to Hard mode, no one would be caring right now.