Gender is definitionally cultural. A person's sex is nature, but the bundle of signifiers that denote gender (as well as which categories exist at all) are largely arbitrary and divorced from that, and vary greatly across time and place. Women wearing pants was unheard of a century or so ago, and would 100% be perceived as queer, nowadays it's completely normal. There were times when dueling was a virtually mandatory rite of passage to being considered a man. There are also historical cultures with more than two genders, and it's not as if people in those cultures were biologically different from others.

There's nothing "extraordinary" about this claim.

[–] rockerface@lemm.ee 3 points 4 days ago

Pants could also be exclusively feminine clothing, depending on the region and time period. Also, the colour pink used to be considered masculine (as we're all shades of red).

What I'm saying is, you're absolutely correct, and gender expectations are completely reliant on the culture factor.