'You can’t have a discussion on this subject when one side is coming at it from the point of view that transwomen are actually women. '
I think that's not it.
My view is that women and girls have generally been and still pretty much still are condsidered to be what men/ male dominated society say we are.
We are -by strangers and people who don't know us well and often those who do- seen in terms of types. 2D cardboard cutouts.
Men like to put us into the role they deem us to fit.
MILF
Jailbait
Tart
Old dear
Angry feminist
Bimbo
Ballbreaker
Etc etc
You get given a type and you are supposed to meet it.
Same as the all women love prosecco type stuff.
When you do something out of the 2D role given its met with confusion, dismay, anger.
So given this, what is a woman? Current opinion. No solid definition.
A woman is anyone who says they're a woman
The ones who take a passive role in sex and are valuable economically by having children
A formless entity (or whatever it was)
Women is a social role and always has been
Sure there's plenty.
So, we are just sort of templates with a 2D type attached.
Very few people are using woman to mean anything like what it used to mean.
When people say TWAW what they mean is that their understanding of what the definition of woman is, is different to what it meant to pretty much everyone up until recent history, and to the vast majority of the population still does.
Anyone can be s woman because a woman is whatever others want them to be.
It stems from massive sexism in other words. And changing really commonly used language. And saying it's not a change it always meant that.
The response to women saying no is the same response I described upthread. Confusion, dismay, anger.