Trans athletes make great gains, yet resentment still flares

Mr. Sparkle said
If my teenage daughter was competing against a teenage boy undergoing hormone therapy I'm not sure I'd consider that a fair competition.

In what sense? If your teenage daughter was competing against another teenage girl it'd be unlikely to be a fair competition in the sense that they're both identical and neither has any physiological advantage over the other. So what are we considering to be fair here?

Is the performance of a teenage boy undergoing hormone therapy likely to be outside the range of performance teenage girls can cover? I suspect it probably isn't.

superchuck500 said
In fact, some female athletic sanctioning bodies have already enacted testosterone programs that could, in some cases, require a female athlete to lower her natural testosterone to be able to compete.

There was a case being heard against the IAAF in the Court of Arbitration for Sport on that last week as it happens (verdict expected next month): https://www.apnews.com/f3bcaf134b7240d2af0bdc6dee39e596