I have a MtF trans relative and she has written so clearly about an absolute internal sense of gender, from a very early age. It seems so arrogant to contest this - yes there may very well be people who do not have absolute internal gender - they may even be a majority. But it seems wrong for me to say that "it isn't real" about anyone else's experiences.
allhailqueenmab, what you say here, IMO, highlights the pernicious difference between transsexualism and transgenderism.
Pre post moderism and queer theory, a person like your relative who struggled with 'feeling like a woman in a man's body' would take on feminine dress, take synthetic sex hormones and possibly have a 'sex change operation'. And sometimes that would make the person feel better. Ok, good that the person felt better and it isn't that big a deal if they want to 'live as a woman'. The person would be called 'a transexual' and it would be taken as said that they were a male person who imitated women/lived as a woman in order to feel better in themselves. Hormones, dress, make up, trappings of femininity would help with this attempt to 'live as a woman'. It was clear to everybody that an attempt was being made to change sex with the crude tools available - surgery, hormones, dress, etc.
It was generally accepted that you cannot actually change sex and that the crude attempt made a person feel better and more at peace with themselves, but it didn't make them actually of the other sex. Male to female transsexuals couldn't menstruate, get pregnant, didn't have ovaries, uteri and vaginas, etc so it was pretty obvious that they weren't biological females - they were transsexuals living as women.
Then, in steps GENDER. The most fundamentally patriarchal concept known to woman and man. And in steps, QUEER THEORY and POST MODERNISM. And transsexualism got a face lift - how old fashioned and boring to talk about biology and reality and sex! How essentialist! None of those concrete things matter anymore because we have gender, identity politics, agency, choice, individualism and a whole ton of bullshit about inner identity trumping physical reality to the extent that if you decide you are a woman, that makes you an actual biological female.
Enter 'transgenderism' - a concept based on a social construction i.e. something that is made up . Gender itself is not real. It is an idea, a concept, an abstraction. Gender roles exist, the gender hierarchy exists, gender stereotypes exist but gender itself is utterly made up.
Gender does not trump sex. Because sex exists and gender doesn't.
If gender trumped sex I could disappear female oppression in the snap of a finger - females would just have to declare themselves as masculine and we would never be oppressed, raped, sold, abused, controlled and subjugated due to our sex ever again. Awesome!
Except it isn't real. Gender isn't real so we cannot disappear female oppression via queering gender.
However we are supposed to accept that when men queer gender that makes them female. That makes them the same as biological females. That makes them actual females. Because, gender.
Because gender (which doesn't exist) trumps sex, trumps reality, trumps rational thinking. And, most importantly, the patriarchal notion of gender trumps the biological reality of sex only when it suits patriarchy. Gender does not trump sex when it comes to oppressing females. A female who rejects gender will still be oppressed due to her sex. Which sounds like women not having their cake and not eating it, whilst men get to have their cake and eat it, doesn't it?
But women must accept the above because it is nasty and transphobic not to. We must accept that gender trumps sex except when it doesn't. We must accept that gender trumps sex when it comes to transgenderism but it doesn't when it comes to female oppression.
So while radical feminists can have sympathy with the idea of transsexualism and feeling you are in the wrong body, we call bullshit on gender; and therefore on transgendrism. Feeling like your penis is female does not make it so. Feeling like a neovagina is a vagina does not make it so. Feeling like a neovagina is a vagina does not make it so. Feeling like you have the right to enter female safe spaces because you think that your penis is female or your neovagina makes you female, and that females must accept your 'inner gender identity' (even females who argue that gender doesn't exist) makes you a gaslighting misogynist.