The fact that, the aim is, for there to no longer be any terms to describe cunty people as a group, is an issue for all cunty people.
Obviously.
The idea that there needs to be no collective term for cunty people and that the previous well accepted ones need to be repurposed to mean something else completely is misogynistic.
We have spent long enough being considered by society, religion etc as non people - as chattels, as lesser, as men-gone-wrong, as sub-human - and still are in many parts of the world (and I would argue that the attitude hasn't entirely gone away in most of the world).
So just when the women's movements all over the world start to make real gains or at least get media attention - in regard to a massive range of issues from rape to child marriage to increasting representation in politics and different jobs and so on all of it... That there is a move to take the words woman, girl, female, and totally change what they mean.
This is of course not down to individual transpeople, it is a general and heavily pushed aim though of a lot of TAs, and it is gaining ground fast. Why it is gaining ground so fast - to remove the words we have for ourselves just when we are gaining some ground - is another question again and one with not many happy answers I think.