“Why do people like a character who’s committed war crimes but hate this other character just because they’re annoying” because it’s fiction Susan, and being annoying in fiction is a greater sin than being a supervillain, because it won’t make me want to read about them. It isn’t difficult to understand
“It is absurd to divide people into good and bad. People are either charming or tedious.” (Oscar Wilde)
if your villain is sad and yet polite they are much more entertaining and simp worthy than an annoying cocky and self righteous hero.