[Izzy]

That kind of reminds me of that whole story of the parents that were pushing a female gender role on their son and demanded that he be allowed to use the girls bathroom at school.

Even if the kid totally identified as a female that doesn't change the fact that he had a penis. Bathrooms are the way they are for an entirely practical reason. It has to do with biology, not gender identity.

Pronouns aren't quite so objective, but they should still follow grammar rules.