If you’re born with the brain of a man, you’re a man. If you’re born with the brain of a woman, you’re a woman.
Your =/= you´re
Some have XXY, some have X, some have other variations. Yahweh-God is quite the fumbling creator.
Perhaps we have a god with a learner’s permit…
No, they need to get their bodies right. It’s not possible to change the head.
They tried that with Bruce Peter Reimer, whose penis was severely injured in infancy circumcision. The doctor believed that the genitals were all that matters, and the boy was brought up as a girl. He always felt like a boy, and switched back to living as a boy at age 15.