See: https://onlinelibrary.wiley.com/cms/asset/ef10e7e8-ab16-4b88...
From: https://onlinelibrary.wiley.com/doi/full/10.1111/cen.13840
My point is that the model is indoctrinated to oppose the idea that there are only two sexes even tough it is the factual, scientifically agreed state of human species (with all caveats mentioned earlier and more).
BTW - the question whether physical world is continuous in the strict physical sense is fascinating by itself. There are real numbers that are uncomputable. Set of of all possible Turing machines is infinite but countable, because you could write down an algorithm that lists all possible Turing machines. But the set of real numbers is not countable. By the Cantor's diagonal argument it is impossible to list all real numbers. Therefore, some real numbers must be uncomputable. Are they really "real" in the ontological sense :) ?