There's a distinct difference between disapproving of men who dress as women and believing that they shouldn't be allowed to do so.
Perhaps in some very conservative societies.
Where I live I'm confident that a boy who enthusiastically engages in things which actually interest him is at a social advantage over boys who halfheartedly pretend to enjoy in whatever his parents think is normal.
Ballet, for sure. Maybe not dresses so much, at least not if he is doing the wearing, but having an interest in the clothes of his female peers certainly isn't any kind of social problem.