The solution is to designate every restroom open for any one of any age or of any current gender, or hope to be gender, or was......then let’s see how long the “I’m too busy dealing with crab grass” silent majority starts to pay attention and give a d*** and do something about it.
Maybe one side effect would be that parents would be more careful about minors. Can’t just send little Johnny or Janey in there.
There are ways of compensating for a lot of evils.