I think the question of "importance" is one thing, and there's certainly differing opinions there, but the person I was replying to seemed to be making a much more particular claim that under determinism people cannot be hurt, which seems far stranger.

Your point is understandable enough that if they're hurt they were determined to be and so it could not be otherwise so maybe worrying about it is a waste of time, but while that's all very relevant to the free will debate, I'm still just hung up on claiming that "hurt" isn't possible outside of any of that.