Why would you feel insecure? It has nothing to do with you. Most men are disrespectful of women they don't find attractive. The thing or feature itself doesn't matter. It is just something to complain about/make fun of. He finds you attractive and therefore he is trying to pretend that he respects you. His misogyny is the problem, not you.
Which is why she should have set the boundary first.
Why would you feel insecure? It has nothing to do with you. Most men are disrespectful of women they don't find attractive. The thing or feature itself doesn't matter. It is just something to complain about/make fun of. He finds you attractive and therefore he is trying to pretend that he respects you. His misogyny is the problem, not you.