I dont believe there IS an innate sense of gender that's universal though. I do t have one, many people here have said they don’t have one. I see it as a faith based position, akin to belief in a soul.
It is not measurable, or observable. So what are we to define it as? I’ve never heard a decent definition of what ‘a female gender identity’ actually IS. I know I’m female. I know this because of the biology of my body. I’m pregnant, I’m not terribly well due to it - that’s how I know I am female. Otherwise, my identity is just me. I have a body, and a personality.
What IS a gender identity? You might say that it’s a feeling that one is, for example a woman, but how can you know how that feels? There’s no definition that’s not a circular argument.
Transsexuals are not delusional believing their body primary and secondary sex characteristics are that of the opposite sex/gender to that assigned at birth.
Now my next sentence is not to be read as perjorative. I mean delusional in the medical sense. A delusional belief is a sincerely held belief that is demonstrably incorrect. You’ve just said that you dont believe people can change sex but now you say that someone who believes they are the opposite sex is literally correct these two statements are contradictory- the second one is demonstrably wrong.
They therefor associate themselves with the sex/gender they are, that being the opposite of the sex assigned at birth.
No one is assigned a sex at birth. Sex is observed at birth.
They may associate with/as (although these are two different things) the sex they are not. However that belief does not alter reality. Belief and objective reality are two different things.
It is possible that this is an unconscious development caused by chromosomal / hormonal influence on core identity development.
Statement on chromosomes: word salad I’m afraid.
There is no evidence for the ‘hormone wash’ theory either.