When brain scans detect cross-gender similarities in brains of transsexuals even before any hormone treatments, it's not just politics. To the contrary, it's the people refusing to consider the increasing mountains of physical evidence who are refusing to call a spade a spade for political or religious reasons, or just plain orneriness.
Form follows function, and if certain parts of the brain more closely resemble the other sex, they're going to function that way. Hence the whole "born with the wrong body" is actually a pretty good 5-word summary of a complex issue.
Now if you have any proof that the brain doesn't have anything to do with human perceptions of self, you're certainly welcome to introduce it - but you can't because without a brain there is no "self."
Actually there is self, Just the self has no capacity to cognate its own state. Unlike a human with a functioning mind..If someone identifies as woman, but is a man. Its not because their a woman. Its because their damaged cognitively. This sort of breakdown should be repaired. Not allowed to flower into further disrepair. The fact is people with these disorders need therapy, Not a cookie.
I can definitely "cognate it's own state." Put down the bong. Then maybe you will be able too also.