Yes, I read a statistics on that somewhere. Only a minority of women (females of any age rather) are within the menstruating bracket in any given period (pun not intended) because of age, sexual maturity, pregnancy etc.
Anyway.
What a load of shite to say periods are genderless!
Tell that to my non-verbal child who now is getting periods but have no concept of what either sex or gender is.
Despite this, should a male force himself on her she may now still become pregnant despite her being a tween.
This twisting and turning of language has consequences, as the dire situation with rapists in Scottish female prisons has shown with abundant clarity - 10 years overdue!
I did not pay attention. To my shame. Wanted to be kind. Was busy not being killed by my then partner (male) and afterwards salvaging the wreckage for my children.
No excuse really, but when I did start to pay attention the massive problems were screaming in my face, precisely because of my experiences as a woman.
I don’t like all women. Very few, in fact. I certainly don’t agree with all of them - again, very few. But we share a biology that makes us vulnerable in most human societies.
And periods are a big fucking deal to do with that.