Obviously this won’t work for all sports, but things like football, track, soccer, it would allow for de-gendered team, even allowing athletes with the skills but not the genetically-endowed physical attributes to have a place to play.
Note: I know very little about sports and being on a sports team, so please point out anything that doesn’t make sense.
I think it’s a lot more black and white being trans than people realize and I have my own pet theories about what gender euphoria /dysphoria is that I observe as being two independent factors.
Half of the problem I think in reaching people is that the vast majority of cis people don’t have an observed internal gender preference. We are trying to build empathy with something we as trans people assume they have too - but maybe only a small minority of cis people experience it. I don’t think we actually understand cis people, we just assume a bunch of things about them using trans people as a false opposite.