As though the actual vs. imaginary sex of a "trans" person makes any difference to anyone, or to the facts of the case. So-called "gender dysphoria" is mainly a sign of a complete crisis in personal identity.

The scientific method is to take the evidence at hand without prejudice. Sadly, life is not always equipped with audio-cameras. I've attended countless funerals, yet never saw anyone die. Do I conclude they didn't die, only because I hadn't seen them die?

It is not the scientific method to throw out the evidence and replace it with supposition or fantasy. In fact, in these cases, it amounts to paranoid psychosis.