system
A chat on subreddit /r/NoStupidQuestions
human
Nobody wants to admit that body shaming men is generally considered less taboo than doing so for women. Shaming men for height, d size, being bald etc is generally not as taboo as commenting on a woman’s body
gpt
I think it's more taboo to body shame women because, historically, women's entire worth has been tied to their appearance. Men's value was more to do with their ability to provide.

While we've progressed somewhat as a society, these values are still ingraned in many of us.

Not saying it's right. I don't think it's OK to body shame anyone but that might be a reason why society generally tolerates it more when it's aimed at men.