Hmm, PricklyBall, I see what you're saying but I think it might be a bit optimistic. The article goes out of its way to frame the current situation, which enables men like the two in the article to win competitions that are supposed to be for women, as fair, which it manifestly isn't.
The advantages that people with male physiology have over females in sports go well beyond testosterone, and involve the whole skeletal and muscular system and especially men's larger heart and lungs. Women's rib cages are smaller and angled differently to men's (presumably to accomodate the displacement of internal organs during pregnancy), which means our lungs are on average 10 per cent smaller than those of a man of similar size and weight. This allows men to take in more oxygen, a very significant factor in cycling and indeed most sports. There's a reason EPO is a banned substance along with testosterone.
I also thought that the article's framing of Bearden's argument as concern for female competitors was a bit disingenuous. Bearden isn't as detached from reality as McKinnon, so he can see that McKinnon's proposal would lead to a genuine backlash against trans-identified males in women's sports, because the sheer absurdity of the situation would be impossible to deny. He is keen to avoid that happening, for obvious reasons.
Neither gives a shit about women.
I also loved this bit of sophistry from McKinnon:
while McKinnon believes subjecting trans women to testosterone blocking violates their human rights.
Nobody is strapping him to a hospital bed and forcing testosterone blockers down his throat. If he doesn't want to alter his hormone levels, he can get out of women's sports. (Actually, he can get out anyway.) This tactic of claiming that any denial of their will is a human rights violation is so typical of trans activists.