Well, the Ms. Marvel argument misses the point entirely, because the sexism in that scene wasn't the Doombot calling her a piece of furniture or whateverthefuck, it was that Carol actually cared
, and Wonder Man had so little respect for her that he immediately tried to reassure her that no, she wasn't
a cow, and then Carol got that much more
insecure. The idea that Victor von Doom
calling Carol fat
was some kind of meaningful blow to her ego and self-confidence was a million times more insulting and sexist than anything Doom himself could have said.
Other than that you're spot-on, though. "What's wrong with an evil character acting evil?" as though all evil were interchangeable is such a shallow, juvenile way to write a villain. See also: Magneto, Deathstroke, and to some extent Barbara Minerva.