[QUOTE All we should care about is athletic equality, and like it or not, going through puberty as a male gives you an advantage.
There is no such thing as "equality" in sports, at least in the way you present your argument. All sports are biased to favor inborn characteristics as opposed to those you can practice or develop. Watch any soccer game with kids aged 11-15. Some are significantly taller and physically more mature than others. At the college level, the average PAC-12 womens' soccer player is almost 5'8", which puts her at about the 90th percentile for height. Some runners have a gene which allows them to process oxygen slightly more efficiently. Quarterbacks usually have huge hands. Yet nobody complains about these genetic and hormonal advantages.
Then there are medically-created athletic advantages. In youth soccer, I am aware of a number of players who underwent hormone therapies to grow taller, as did Lionel Messi. In baseball, pitchers get Tommy John surgery, which makes their elbows stronger than they could naturally achieve, while batters get eye surgery to help them see pitches better. Yet nobody complains about these medically-created advantages.
As to whether "going to puberty as a male" gives a male-to-female transgender athlete an advantage, you may be correct. So what? We already countenance genetic, hormonal and man-made advantages in sports. Why draw the line at transgender.
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While every athlete can undergo vision correction, most athletes are not allowed hormone therapy unless there is health logic to do so. Lionel Messi's hormone therapy was to help with a medical condition he had and it didn't give him an unfair advantage against other athletes, it was going to help his body create the hormones it naturally would have created if he wasn't sick.
With M2F, you're asking elite sports to ignore the highest forms of unfair advantages and that's not going to happen.
For everyone who says this is not a problem bc how the minute numbers of trans, then please recognize that even with such a minute number of trans, it has already affected women's sports. M2F athletes already have created issues in the following sports: biker, swimmer, volleyball, basketball, runner, etc.
That's a lot for such a small group of people. So imagine when the M2F surgeries in the next generation increase, how much more issues will it cause?