Biological homo sapiens, our species, has only existed for about 200,000 years. Cultural homo sapiens goes back about 12,000 years, when we built settlements and developed agriculture. The recorded history of homo sapiens goes back 5,000 years to the first known writing, and the first thing those Sumerians had to say was that there were genderless beings called assinnu and kurgarrû and galatur. And modern English goes back 500 years. So, no, the idea of a "man/woman" equating to "male/female body" does not in fact go back "maybe millions" of years. That is a hypothesis you just made up.

Saying that something is a "social construct" does not necessarily mean that the social construct exists in an individual's imagination or that anyone can snap their fingers and become that thing. It may, but not always. National citizenship is obviously a social construct (not biological), yet I can't have any citizenship I like.

I wrote about about the race/gender analogy in 2021. Or, a bit more precisely, I wrote about the ways in which I do and don't need to take it seriously or respond to it.

https://tuckerlieberman.medium.com/dolezal-change-race-transgender-analogy-42cfacfb6fd4

I have written 200 articles explaining transphobia.

I am millions of years bored with this.