Sport is never fair. You can say its under 11, but there is always one kid that's already through puberty and twice the size of the others.
You can say its a women's race, but there will be several people at the front that have bizarrely high T and massive lung capacity due to their DNA make up.
No one is owed a living in sport. You have to be incredibly lucky to be able to consider it. I can't get very excited about which particular set of genetic freaks are currently able to monitize their freakishness.
I don't 'feel sorry' for someone because they are only second most genetically out of the bell curve at any given moment in time. The whole thing is nonsense.
The overwhelming majority of sport is done by people with no hope in hell of becoming pro. For all those people the fairness of the top level sport is totally irrelevant. I've played on women's teams and men's teams its no big deal at the grass roots. I'm not going to stop playing sport because the people winning the women's medals look different than they used to. They never looked anything like me anyway! I'm not going to tell my DD to stop playing sports because she'll never make it to the top level either. Again that was already true from birth regardless of where the TW issue eventually lands.
I do believe sport should be XX and XY because nothing else makes sense. But I also can't get worked up about this issue as it affects almost no one, and those it does affect only ever had luck/timing to thank for their privilege in the first place.