gender crankiness
I feel like most of why we even have a gender binary is really callous. In older days it theoretically defined which variety of terrible job you had (the dichotomy of men going to mill, field, mine, dock or railyard while their wives did backbreaking but probably less lethal work at home sure didn’t apply to say, immigrant communities in NYC) and now that work’s differently brutal it largely exists for marketing. Buy x skirts, buy y motorcycle, join z army, do a at church.
gender crankiness
Take all that away and you’re left with what, 30% of the time where it’s useful to know the endocrine definition of someone’s body to figure out industrial design, epidemiology, whatever, and even then that says so little about a person’s identity.
Then we get into pre-teen/20-something/20-something with PCOS/post-menopausal body are all pretty different endocrinology and that could easily be the same individual anyway, before you even get into how they perceive themselves.