Hello! My question is whether "femininity" and "masculinity" are just imaginary things humans made up or biological. Transmedicalists always argue "gender" ("femininity" and "masculinity") is biological, for instance here; https://saidit.net/s/GCdebatesQT/comments/5ycm/gc_are_there_such_things_as_femininity_and/n5mn

I think gender is like language. It's naturally triggered but completed by culture. It can vary but it always has to act within natural norms. Physical strength is always going to be seen as more masculine, smooth skin is always going to be associated with feminine. All societies have masculinity and femininity even if they vary.

https://en.wikipedia.org/wiki/Sex_differences_in_human_physiology#Skin

Another famous example of transmedicalists is Blaire White, he argues "gender" is biological because of the differences in hair, body, bones, etc of males and females and he says there are male and female brains because he's a transmedicalist; https://www.youtube.com/watch?v=s9WqfBDjRF8

Since the point of GC is "gender" ("femininity" and "masculinity") is just a social construct and not biological, I wanted to ask for arguments against the "gender" sessensialism that says "gender" is biological instead of a social construct