The wider "every woman I don't like is a trans man" conspiracy theories as well. Greta Thunberg, Taylor Swift, you name it, they're all men pretending to be women for some reason I can't grasp.
I'm still not sure if this is a conspiracy theory or mental illness. On the other hand, good on the trans community for transitioning so well that the hateful conservatives can no longer tell who's trans or cis.
There is a fellow kiwi that debunks conspiracies (mostly flat earth) on youtube that has come out as trans (@Planarwalk). The utter vitriol that has been directed at her since she came out (and a little before as she at that stage tended towards effeminate) has been incredible to see. Trans people must be some of the strongest folk around.