You know full well, there are two sexes in mammals, male and female
As Aurora has said, there are two reproductive pathways. That does not mean that all humans can reproduce, should reproduce, want to reproduce. If they don't they still are humans with unique biology (identical twins etc excluded).
Reproductive biology is binary and immutable, other human biology is not, it is variable. Saying that ''biological sex'' covers all variations is not even GCSE level biology, it's for 8 year olds and adult simpletons.
There are enough men who think that women exist to satisfy their sexual needs, and who would be horrified if they had to stump up the eighteen year costs if the women they had sex with reproduced. Listen to the brothers Tate. Listen to the language they use. They are not interested in womanhood. Men and women in nightclubs out on the pull for a one night stand, are not looking to explore their reproductive pathways, they have other drivers and needs..
We are all unique in our bodies and in our minds.
Beyond this, how should women be treated in society? Just with regard to their reproductive biology? Nothing else? Just treat them as being useful as 'females'? And the women who can't reproduce, how will you treat them?
So here I am, a woman, a woman who will resist men treating me with the potential of being a lump of meat for their purposes. I am not merely female, I am a woman with all that entails. Additionally I will set my own path as a woman. I don't need some funkwit male to tell me ''what a woman is'' or to tell me how to look like a woman or behave like a woman. I do not try to make myself close to the ideals of men for their purposes. fark that.
I assume I once had a reproductive sex. I know I no longer do. I didn't want any man to take any interest in it. I don't exist to be any man's plaything. I don't care if they don't like my appearance. I don't exist to be men's fiddle fantasies.
I want young women to be free independently minded women, not tied to Victorian values of merely being female for the entertainment of men.
What is is that you want for your daughters? Just baby makers so that you get to be called ''grandad''? Sincerely for their sakes I hope not.