Who decides what is “real” though, if it’s not the person in the body? So someone says they are a boy, but the MRI says nope, you are wrong, you are a girl through and through.
What if I am a cis woman and have a mind that works more like a guy’s mind? But if I still am comfortable and happy in my woman’s body, who cares how my mind works? Nobody, that’s who. Why would trans people not get the same consideration?
I just don’t think it makes sense to use tech to invalidate someone’s experience, and it’s just not anyone’s business if someone wants a different body. My sister got big fake boobs, nobody said “well, you don’t have a body that matches the boobs” they just gave her what she asked for and paid for. Why can’t a man do that if he wants? Why does he have to prove he’s a woman first?