I've already said that I agree that transgirls shouldn't be in girls loos or changing rooms. I completely agree with that. I also said more than once that I am not addressing the fairness aspect, only whether transgirls take uni spots from girls. (I used cis girls bc I thought that if I used girls in that case, it would be unclear if I was including transgirls in the category of girls. Unlike many here, cis doesn't bother me, but I try not to use it unless I need to make it clear that transgirls are excluded from the group I'm referring to.)
Where do you think I said any of what you said above? I think it's unfair for transgirls to compete in girls sports but I don't think they take girls spots at unis.
E.g., a friend's daughter was cut from a high school team, not bc of a transgirl but bc she lost to other girls. She then started volunteering more at a local shelter. She got more responsibilities, organised new adoption days, and made a website to help identify potential adopters for animals in all the county's shelters. She got a strong letter of recommendation from the head of the shelter. That made her application stand out much more than a similar number of hours playing sports would have and she loved doing it.
If she'd lost to a transgirl, I agree it wouldn't have been fair but I still think that her uni applications would have been stronger if she'd volunteered (as she did) than if she'd played the sport all four years.
Again, I'm not arguing that transgirls playing in girls sports is fair, only that they don't take girls places at uni. That is based on my friends' experiences, including the one that worked in admissions.