I'm enquiring as to whether you can apply this multidimensional concept of sex that you alluded to in the above comment to any species other than humans.
Dogs, for example. Or maybe asparagus. Perhaps even earthworms. Please explain how this works.
His argument is basically just that redefining words can be used to make statements true that weren't true before the definition was changed.
This is great, I can make the statement "pigs can fly" true if I redefine "pigs" to mean what we currently call "birds", or redefine "fly" to mean "roll around in the mud". Easy!
So if it is your stance that men who call themselves women are female, or as you stated it, "trans women are female", then any disagreement is easily solved: simply redefine "female" to include those men. A brilliant masterstroke of non-argument, as you don't even need to justify this nonsense. It's true because you said it's true!
Of course as per usual this is without any regard to what people who are actually female might think about this, being lumped in with these prostate-havers who fetishize their existence. The Categories Were Made For Man, indeed.