The fundamental issue here isn't about sports. The white elephant in the room is the issue of "can you change your sex"? Trans supporters think that you can. They think that trans female really is a female and should be treated as such. When this happens can be debated but at some point in the transition, supporters think that the person really has changed sexes. The more reasonable folks IMO, say "you can take hormones, you can cross dress, you can get parts chopped off or added, but your sex does NOT change. You are still who you are." True believers in the trans movement can't go there. They'll call you a transphobe if you won't go along with their thinking that sex can truly be changed. I won't even go into the issue of gender 'cause that's irrelevant and just muddies the water. Things like bathrooms, locker rooms and sports should be separate based on one's sex, not gender