That's right, some 20-year-old recreational skater is going to choose their breast size based on doing well in some skating comps as an adult skater.
I really don't understand your point
Discussing hypotheticals. It is unlikely we’d see a skater in the midst of medical transition also pursuing an elite international skating career, but this is the thread for the ISU policy (so elite international going to worlds kind of level and not adult skating).
You were also the one who first brought up transgender women getting breasts via top surgery:
But they also get boobs. Which transgender women who get top surgery will also get. They also gain weight because women tend to have more body fat than men after puberty. HRT should also do that to transgender women.
Thus my response that someone at high level (because this thread is about ISU policy) who was transitioning wouldn’t choose to have large implants or implants at all while competing. Also, given that most female skaters are pretty flat chested because of very low body fat, a hypothetical elite level skater on HRT would likely also be flat chested because of lack of body fat.
The reason it matters to me is that Title 9 exists for a reason as does the separation of most sports into mens and womens categories. It was about giving biological women a fair field of play in sport due to having less physical strength than biological men. I think that fair field of play is an important thing to protect.
For me, the question is: how do we fairly include intersex and transgender athletes at all levels of athletic competition while we ensure we are still providing a fair field of play for people born biologically female. As a scientist, I think that means doing some studies and actually figure out if there are still physical characteristics that would allow an unfair competitive advantage post transition over a biological female. I suspect it depends on the individual sport and/or when hormonal transition began.
I think of two things as a starting point: pre-puberty, girls run just as fast as boys, if not faster. After puberty, when equally trained, the girls can’t keep up with the same boys they could equal or beat before puberty. The other was the mixed team relay swimming event in the Olympics. Not all countries had the same sex go in for the first leg/same stroke. All Olympic level athletes, but the men were comically ahead sometimes half the pool.
I know asking these questions makes people feel uncomfortable when we want so much to be inclusive. Sports is a physical endeavor though, competed with physical bodies. Undergoing male puberty with testosterone does some things that cannot be undone by surgery and/or HRT.