These people also never consider that they're measuring the wrong thing. If they're taking the position that the effects of testosterone from birth in trans M-to-F kids gives them an unfair advantage due to bone density and muscle mass, then they're failing to take into account that there are a number of natural health conditions that produce elevated testosterone levels in women as well.

I'm not saying this to be funny, but women with stubble especially around the chin often have elevated T levels, often due to PCOS. There truly are some women who are "built like a man" and they're not trans - at least certainly not in the way we use the term today. They're natural, their bodies just work differently.

Banning trans kids isn't going to level the playing field in the way they say they want to. Measuring things that testosterone affects like bone density would.