We all agree terf has not been a useful term for a long time, it implies they're feminists, it implies they're for women, it reinforces their arguments that they're on the side of women and gives them space to hide their more extreme elements.
Why not something like cis-supremacist? Something that is far-right adjacent would be useful in making people properly make this connection, especially given who they're allying with lately.
I see it used in all lowercase enough that it doesn't even register as an initialism to me anymore tbh, it's just a new word for a specific kind of transphobe