I used the analogy with religion on another thread.
If someone I know decides they believe in god, or transubstantiation, or transmigration of souls, or whatever, I will respect their beliefs. I would even be genuinely happy for them if that belief set brought them comfort, a sense of purpose, a sense of fulfillment. I would stand with them in solidarity if for instance society tried to discriminate against them in employment or housing or civil rights (cf my posts on the thread on the burkini - if I was in the south of France I'd be going to the beach in long sleeves, trousers and a scarf to show solidarity).
However, if that someone tried to proselytize me, or worse, threatened me with exclusion and shunning (effectively the technique that Ada has been using against political opponents, I would withdraw my respect and support. Because they didn't deserve it.
So here goes (awaits deletion)
Ada Wells - calls women cuntscum, tries to coerce lesbians into sex: Ada is a man, not a woman.
Davina Ayrton - convicted of raping a young teenager and possession of thousands of images of the sexual abuse of children: Davina is a man, not a woman.
Claire Darbyshire - convicted of murder and of sexual offences (specifically that uniquely female crime of breaking into your best mate's house and wanking into their underwear): Claire is a man, not a woman.
And I refuse to be silenced by analogies to racism, Islamophobia, etc, because I, incontrovertibly and biologically, am a woman. I (and other women) get to say who gains membership of our oppressed group (and we are oppressed - both world wide and in smaller ways here). Misogynistic, homophobic, violent, sexually abusive men do not get to define who counts as a woman.