I saw a coffee creamer at the restaurant the other day that was labeled, "Non-dairy Creamer...Contains Milk".
So, I showed it to the waitress and said, "If you can figure this out, you probably know what a woman is.". Luckily, she laughed.
We are truly whatever our DNA says we are...the same way the creamer actually did have milk in its composition...despite its claim to be be non-dairy. A male choosing to live as a woman is a choice, not a truth. It is his presentation and marketing...his claim, like the non-dairy creamer. Still, claiming to be a woman and being one are not the same thing.
But, although it will always be a falsehood when a male claims to be a woman (because of his DNA), there are varying degrees of genetic feminine and masculine traits. So, the lie seems bigger or smaller depending on these traits, just like a non-dairy creamer can be mostly non-dairy or blatantly full of dairy.
You've ventured into werdnerd territory now and lost your way, by over half a dozen centuries. Let me help:
https://www.etymonline.com/search?q=gender
Gender has been for decades the usual English word for a person's sex (M or F) because of the erotic connotations intertwined with the word sex.
Related words: gender, gene, genetic, genital, general, generation, genus, genuine
The point is that gender comes from genes, which are found on chromosomes; if you got the XX you're female, XY is male, and that's it. There are only two genders, which go with the two kinds of genitals, because genes determine them both.
/werdnerd