I feel like it's worth making a distinction with these fellas. A lot of people argue the strawman point that they're transitioning in order to beat women at women's sports, which is rightfully a kind of ridiculous premise.

The much more sensible truth however is that these men are athletes, and also autogynephiles, and it's simply a necessary consequence of their main desire - cooming - that they must also compete now as women, in order to not break the validatory seal that protects their jizzings and makes them have the best 'gasms.

So no. Men don't become women to play women's sports. Male athletes get addicted to porn, cosplay women for jerkoff purposes, and then have to compete among women to keep their boners happy.