Amantes - societies all over the world divide people into male and female, based on their genitals.
Throughout history, pretty much at all times, those with male genitals have been given the power, the money, the ability to do as they please, while those with female genitals have been made powerless and subject to abuse. Heck, if you had female genitals it wasn't even possible to vote in the UK until 1918. That's not even 100 years ago. Up until 1991, a man could legally rape his wife - that's not even 30 years ago.
So, being a woman has always been a disadvantage for those with female genitals, and feminism has grown up around removing these disadvantages - with great success. We can now vote, own property, have jobs etc. The fight isn't over but we're getting there. Women are still at a disadvantage throughout the world.
So being a woman means something. It means something because the powerful class, men, have made it mean something - they have made it mean that you are lesser, you are an object, you can't have freedom.
Women don't want that meaning. We would happily throw off that meaning tomorrow and just be people, alongside men. But the fact is, we are different than men simply because we have different biology and we are more vulnerable (the very fact that made us less powerful in the first place).
So, we, as women, want it recognised that yes, we are different, because we have vaginas and we have periods and babies. But otherwise we're the same as men - can wear the same clothes, have the same jobs etc etc.
Transpeople are saying no, actually, women are not different because of their biology and in fact it's transphobic to discuss biology as part of "women's issues" because transwomen don't have periods and babies etc.
They're saying I'm a woman because I wear a dress and do my nails and wear makeup.
They are redefining what a woman is, basing it entirely on gender roles.
It's all topsy turvy.
Women don't want those gender roles. We don't want be dress-wearing, nurturing nothings.
We want to be women, whose biology varies from men but who are in all other respects the same.
Who cares who wears dresses or does their hair or wears makeup? Who gives a shit? Why call them women?
A man in a dress is not a woman. I will not have my identity erased like that.
I have suffered because I have a vagina. That's what being a woman is. And a man won't suddenly decide "I've oppressed you for years, because you're a woman, because you have a vagina. And now you can't even call yourself a woman anymore, your very identity is mine, to play with whatever way I like."
FUCK THAT.