So if trans women are women, trans men are men, and nonbinary are nonbinary, it is quite clear that the definitions of women and men have been changed from what they used to be and how they are still interpreted by the vast majority in the world.
Given that biological sex is now irrelevant, how do those of us define our 'genders' who don't possess inner gender identities at all and don't believe in the unfalsifiable concept of an abstract inner feeling of being a man or a woman or both or neither?
And given that biological sex is now irrelevant and has nothing to do with being a woman or a man or neither, how do we explain why certain people in Iran must be veiled and why they can't just identify out of that law?
I don't quite see why we would need specific words for genders if they have nothing to do with biological sex. At best they would be personality bundles (hi, I love pink and sparkles!), at worst a codification of sexist stereotypes and regressive sex roles.