There's a very simple solution to this though.
The other parties could admit that they do in fact know what a woman is and that we shouldn't be support humans for men with special identities. They could protect our single sex spaces and our sports.
They could, you know, focus on coming up with sensible policies that the public actually supports and get the Tories out, rather than "women can have penises and if you disagree you're a horrible bigoted dinosaur who needs to be re-educated".