In the USA we have female spaces for females where males do not belong. Title 9 has determined there should be separate sports for women to compete against each other; not men. This has nothing to do with genitals, it has more to do with bone density, lung capacity, heart size, and other physical differences that put men at an advantage over women in a way that can’t be fixed by giving women a bunch of dangerous steroid injections. We also have different public shower and locker room facilities for men and women, this has more to do with genitals than anything else. So even though it isn’t all about genitals, it is a part of it.