What I meant to say is that government is the only entity that should not be permitted to discriminate. In the case of Selective Service, it should be abolished. If there were a true threat to the US, people would sign up voluntarily as they did after Pearl Harbor and 9/11.
Being forced to register simply for being born male is discriminating based on sex. I’m glad a few of the military higher ups and some congressmen want women to start being registered.