What's funny is Fish actually made the argument in favor of trans people using whichever bathroom they want trying to argue against it. People aren't going to change their behavior regardless of what the law says. Teenage boys will not identify as female to see some boobs, the internet exists. The only people who will put on a wig or a dress to try to see a female doing their business are people who were going to do that anyway, regardless of the law.
And yes, Jeb, I see no problem with gender neutral bathrooms. Put actual doors on stalls so nobody can peek in and who cares who is in the stall next to you?