For 99.99% of people, what I have explained about sex is sufficient.

That's not really how science works, is it?

When the WHO tells me that processed meat is a carcinogen, that is a specific testable claim that I know they have performed experiments on. I can trust that. When they tell me that men who think they are women are in fact correct, and not suffering from a mental problem which contradicts reality, that is not a testable scientific claim. They have not performed an experiment which led them to that conclusion.

As I've kinda said before: you need to catch up with what the scientific community has been saying, if you're actually interested in what science says — and I'm not sure you are.