How could they not be being pushed back?
The whole point of women's sports is that women are not able to physically compete with men in most sports, but by competing against each other, they can learn teamwork and excel through hard work, dedication and natural ability. Forcing them to compete with any biological male who is willing to adopt a girl's name and take hormone treatments takes those opportunities away from them.
But you "sure hope" they aren't being pushed back? I sure hope they take some comfort in that.
Several years ago, there was a PSA called "if you let me play sports."
OK, it wasn't a PSA, it was a Nike Commercial. Could have been a PSA, though.
If you dont' care to watch, I'll tell you. It features young girls describing the benefits to girls who play sports. Better self-esteem and better physical health is the root of all of them. "I'll be less likely to stay with a man who beats me," was the one that convinced me to make sure my daughter had every encouragement to play sports.
Worst argument I ever had with my wife was when she made my daughter miss a chance to try out for pole vaulting the first year they had it for females. It was a bad argument, but I didn't consider beating Mrs. Flops since she had run track also in high school. She's a high self-esteem woman who taught our boys to always be respectful but not condescending to females.
But, you say it is fine for all that to be taken away from girls since transgirls will pole vault much higher?