But that's a contradiction, no? We're saving women from other women and barring trans people also (ones we consider men) because of a perceived risk that I don't see evidence for (i.e. people choosing to compete as women on a malicious basis or with an 'innate advantage' that makes it dangerous - we've had a long time of running these sports without this sort of regulation, and it seems to be a political choice more than a reaction to evidence that women are being outcompeted by trans people). This is also assuming that having a y chromosome makes it fair for people with a y chromosome to compete against one another, but if you compare people's physiology these people who present as women often have low/no testosterone. Separating on the line of testosterone picks up a lot of female athletes (especially at the olympic level) that are not trans, and overall I just see this hurting women without evidence that it's actually a response to harm. In any case, trans people and gender non conforming women become the victims of this in the public sphere. It just seems very misguided.