Would you be OK with the school supporting anorexia if the child feels they are fat? After all kid knows best. What about suicide if they feel there’s no point? Kid knows best.
The fact that someone like you can casually compare identifying as a different gender with something as harmful as suicide or anorexia shows that as a society we just have no fucking idea how to talk about this stuff.
Count me in as one of the people who has a lot to learn about all this - I think it’s going to be one of those things where in 20/30 years, we look back with embarrassment about how we handled it all, and it won’t be easy for everyone to get on board.