Biologist succinctly explains why gender ideologues keep harping on the alleged importance of intersex conditions. I've recently heard two different people I consider reasonably intelligent inject intersex conditions into a discussing to convince me 1) that there are more than two sexes and 2) that sex is a fluid spectrum.

[T]ransgenderism has nothing to do with being intersex. Gender ideologues are simply using intersex as a wedge to push the pseudoscientific "sex spectrum" in order to claim "male" and "female" are mere social constructs to justify people self-identifying as any sex they choose.