I've tried thinking about this issue from a lot of different angles. As a cis woman, I feel that everyone should have an opportunity to compete. I do understand the argument that asking a trans girl to compete in the boys division is sort of like telling a gay man that they can just "marry a woman". That there is no simple answer.
But I do think that trans girls have an advantage that is unfair. That there has to be more conclusive studies about the amount of HRT and the years that a trans woman needs to be on HRT to truly level the playing field. I also believe that gender identity is not enough and without HRT, it gives trans girls an unfair advantage in sport no matter how good (or bad) they are at the sport.
The thing that I always think about is if I myself was a trans girl, who in high school chose to come out. I just truly can't imagine myself believing I was entitled to compete with cis girls, or believing that it was fair to win or take spots away from them. I think about this when I consider Terry Miller and Andraya Yearwood. No disrespect to them, but I just can't believe they have convinced themselves that they won fair and square. Even harder to believe is Cece Telfer, who spent six years competing against cis-boys, and as a cis-male, before transitioning and then winning national titles. How does Cece square that jump with herself in just a year? I just can't understand it.
I think I would feel that way if I was a parent of a trans girl too. Like I would want what is best for my child, but in my heart and deep down I would know that it would be unfair. That's why this is so hard for me to get behind.
Here is what I think:
Elite athletes and NCAA athletes should have strict rules around inclusion of trans and DSD women and that should be based in actual research that they should do. I agree with Rojo it is not a human right to compete in elite athletics.
children should compete with whatever gender they identify in. We already put way too much emphasis on youth sports. Chill out, an 8 year old's travel soccer game is not the World Cup. Let kids be kids, and be themselves.
High School is where it gets tricky. But I think it's fair at this point to insist on a year of HRT for trans girls to compete in state championship meets. But invitationals and other meets should be fine for them to compete in.