Isn't everyone "non-binary"? Siamese or conjoined twins are "binary" individuals are not. So why would you call an individual "them"? Siamese twins should be called "them". The logic of DemoMarxists confuses me.
By the way, there are a LOT of conjoined twins out there, so what happens when both of them don't identify as male or female? Do they call that "non-quadruple"?