I just confronted him about it and told him it really hurt me. I told him he is basically telling our (hypothetical) children that they have to be ashamed of who they are. He says he agrees with me but who knows. I told him no matter what, if we had kids together and my little boy wanted to wear a dress he damn well will and I will take him (my bf) on if he wanted to challenge me on it.

He said the article he read was about parents literally refusing to call their children a boy or a girl even based on genitalia. That they would tell their kids "you don't have a gender" and THAT'S what he meant was "f'ed up". Now that I don't agree with. Just because I want my kids to feel comfortable in their own skin doesn't mean I have to ignore the fact that they either have a penis or a vagina.