Just thinking aloud...
It's always about the boys in the girls' changing rooms, isn't it?
I do wonder if girls, who are now identifying as boys, were compelled to use the boys' changing rooms, whether this would cause the public outrage that is necessary to call an end to this crap.
I KNOW that would be throwing those girls under the bus, and it's not 'right', but if they're old enough to decide they want to change their gender, then they're old enough to understand and accept the consequences. However, at least they have a choice, which is more than their non-regendering sisters have atm.
Who knows, it might even encourage some to defer the decision until they've left school if it makes it a less attractive option/current fad.