How do trans brains work?

Gay people aren't trying to force others to call them something they are not. If you looked like a woman, you wouldn't care about proving neurology.

So you can't. Does that mean gay people are not gay for reasons that have to do with biology?

I just explained it to you and you brushed it off as ‘hand waving’

>whataboutism
just admit you can't prove that "feeling like a female" means you have some sort of woman's brain

You didn't actually explain the details with any precision. It's still completely unclear how you get from A to P. There's intermediary steps. You just use a few big words and think that's enough. It isn't.
Your specific claim is that trans women attracted to men are closer to women biologically than gay men, is it not?

The scientific evidence does show that transness is related to sexual differentiation, though. Why would I admit something wrong?
It is not whataboutism to point a double standard out.

I'm not claiming we know the precise cause of homosexuality.
You are claiming we know what causes transness to the point where concluding you are mentally ill gay men is necessarily false.

That isn’t what I said at all. I said trans women are psychologically female and with medical intervention become physically female via changes in gene expression and phenotype which is the simplest way I can explain it sorry you’re too stupid to understand that