I don't think the OP is saying there is no difference between male and female breasts just that restrictions based on those differences are inane. In particula

I don't think the OP is saying there is no difference between male and female breasts just that restrictions based on those differences are inane. In particular these restrictions are broadly a cultural thing rather than innate and part of the taboo about being naked in some cultures is because they sexualize some body parts to the point of fetish. This isn't universally true, even historically within cultures where it is true now and is often lopsided based on power relationships. For example women often bear the brunt of more restrictive dress codes because they stem from patriarchal societies.