"Trans people find their bio sex distressing on some level - so let's not have a collective expression for them which insistently defines them by their bio sex".
Isn't it odd though that of all corners of the internet, they decide to come here? Not just onto Mumsnet, no, but the Feminism and Women's Rights board. Just that one tiny place. Where people discuss biological sex a lot because that is what feminism and women's rights is actually about?
As an atheist, I wouldn't seek out a forum about Christianity and then insist that I found their debate about God "distressing". And that they must not talk about God. And insist that the moderation team find another word for it.
At what point do the guidelines which state "I’m afraid you need to accept that Mumsnet isn’t the right place for you" apply to those people who claim to find the idea of debate about sex distressing? And yet turn up here mob-handed every single day in order to be further distressed?