It's the same split between biological relation (can be clearly defined and tested) and familial/racial relation (social construct that roughly overlaps with the scientific construct).

As you point out, my lived experiences, as someone who looks/appears female, but has a masculine brain (in some regards), are going to be very different from a different female, who looks more masculine and has a more feminine brain. And etc.

Biological sex is easily determined and has a real impact on your life experiences, but so does the way other people perceive you or how far away your own person is from the norm/mean for your sex.

no, biological sex also heavily influences the way the brain works

why is it that women especially get horny when they drink alcohol? because alcohol increases testosterone synthesis (it combines with cholesterols to make testosterone, not oestrogen)

women have more acute peripheral vision and less acute target vision, the statistics are that most often women driving cars crash into things in front of them because their attention is beside them, they are browsers, gardeners, not hunters, and while there is variance in this in every individual, it is very rarely more than 50% biased away from the average

women are good at accounting, when you have a little gang of crazy children around you have to always be counting them to make sure they are all still there... you have to make sure they all get fed and nobody misses out... the ways in which female brains are different suits the role as mistress of the house, the man works out in the field where his strengths benefit and make him more efficient

the concept of gender, the concept of wealth, the concept of anything is not the thing itself, of course, but the more disjoint your concept is from reality the more psychotic you are, and every kind of issue in society related to everything is all warped by marketing brainwashing shit

like, you know the real reason why they gave women the vote? so they could put them to work in the offices and debase the money even more and create all kinds of problems that benefit drug manufacturers and agricultural conglomerates, to create a constant state of distress in society caused by forcing and cajoling people into things that don't fit them and diminishing the overall productivity and happiness of society

i am not a misogynist, i'm just stating the facts... and the fact is that a huge percentage of women these days have totally screwed up hormones, that make them pick and chase bad mates, that put them into employment that doesn't leverage their benefits and overall reduces the quality of output and the overall morale of organisations as well, and that doesn't even get started with all the poisons in the food supply, the constant, non stop manipulation of people's beliefs, and all these other things that are being done to genocide us