I was hoping that if they transed young enough the advantage would be seriously diminished.
There will never be an elite athlete who transed before puberty.
As I posted on a different thread young sports people obsess about their sport from an early age and are already putting in many hours of training, doing the rounds of weekend competitions and holiday camps by the time they hit puberty. They are naturally active, probably outdoorsy types.
Young trans are obsessing about their appearance and inner feelings, spending many hours doing the rounds of doctors and therapists. Watching YouTube and tumblr.
And so are their parents. They probably hardly ever get to see the light of day or get a breath of fresh air.
It won't ever be an issue.