I'll never understand why either political party won't take this on, head on.
You could make absolute public mincemeat of politicians supporting this ideology.
Rapists in women's prisons, can't say mother, cervix havers and chest feeders. You could go to town on this almost like no other issue.
All you'd have to do is claim that the other party doesn't understand the definition of 51% of their voters, never mind their rights.
Asking MPs what a woman is would be job done.
Politically, it's a gift.