Okay, I don't necessarily disagree with you, but why don't you think this is an argument against bounded accuracy in full generality? "If you have an expert warrior, hitting armored enemies shouldn't pose a challenge to them. Armored foes are a challenge to other people, but that player has made the choice to be awesome at hitting foes, and they should be allowed to do that."
It seems to me that the argument is roughly the same for all the things. But if we concede that the game might have been right to add bounded accuracy at all, it's not obvious why these specific things should be exceptions, while other things shouldn't.