LimeKiwi, when it comes to defining woman in a way that includes TW and women but excludes TM and men, you say People have tried on other threads, so it's a bit disegenous to claim "they never do."
They do. Any trip to the hundreds of other trans threads clearly show that. They're quickly shouted down and ridiculed though if it's an answer you don't like. Which I'm sure you know really.
This isn't true. I have been on the Feminist boards for years and no one has ever provided a definition. And it's by no means limited to Mumsnet. I've been following the debate across social media and in real life for about 7 years but I've never seen a definition.
It's noteworthy that you make these claims while failing to provide the definitions you say are readily available.
Saying "a woman is anyone who identifies as a woman" - which I've seen put forward - tells us nothing about what a woman is. A snargle is anyone who identifies as a snargle leaves us completely in the dark as to what a snargle might be, just as saying a dyslexic person is anyone who identifies as dyslexic tells us nothing about dyslexia.
My observations from watching those who can't define woman in terms that include TW but who want us to accept TW as women is that in some cases they know their claims are based on sexual stereotypes (so a woman is someone who presents in a feminine way) but won't say so. And who can blame them? They'd get a well deserved dose of ridicule.
In other cases it's just about being nice. TW are perceived as very vulnerable and, female socialization being what it is, some women feel we should budge up and make room for the poor souls.
In both cases exposure to what leading trans rights activists are saying and doing often provokes a change of heart. TRAs often tell women to educate ourselves. However it was educating myself - exploring the many Reddit subgroups dedicated to transgender issues, for instance - that convinced me transgender ideology is misogynist and homophobic. In adults it's a male sexual rights movement.
As for child transition, it's an ethical nightmare.