A video a student showed in class for a presentation went from biological sex, to other factors (gender expression, sexual orientation), then deconstructed all the binaries of the original four categories, and finally reached the conclusion that there were as many possibilities as people on the planet: every person has a unique sexuality. What promises to be infinite diversity, then, ends up being the end of diversity, since you can no longer find two people alike. This means that any group of 10 people chosen at random is as "diverse" as any other. This was not meant to be a reductio ad absurdum, but it ended up like that. If everyone is equally queer, then it turns out nobody is.
It would be a bit like an analytical tool so fine that it ends up being not a surgeon's scalpel but a blender.
Without the original binary of biological sex, nothing else makes any sense. For example, being a Lesbian means being attracted to ... what exactly? We can't say if we don't have a concept of being or not being a woman. The proliferation of categories seems promising, but then ends up destroying any coherent thought.