I know this is serious business for the competitors, but I can't help the amusement because these arguments are so futile. There are no right answers. You have gender, as how a person self-identifies, you have biological sex, as in what reproductive organs a person was born with, and then you have genetic sex, as in what chromosomes/genes a person is born with. And guess what? The three can either "align" or "mis-align" in every possible way. In the end, things like who should compete against whom is going to be a judgment call with a high level of arbitrariness involved. No matter what is decided, it will be unjust for someone - because we have to have those boxes that nature refuses to play neatly in.