Every person on the planet grew up in a home with bathrooms and showers that accommodated all ages, genders and sexualities.
And somehow, we all survived. Just as a reminder to people freaking out about gay or transgender folks in bathrooms.
I remember the same crap (heh) being brought up during the debate over the Equal Rights Amendment to the US constitution back in the day. It did not pass, and one of the scare tactics was that all bathrooms in the country would have to be unisex
! The idea was that every public bathroom would be equipped with a male child molester lying in wait for little girls. Horrors.
Now many places like airports have "family bathrooms" that anyone can use. In colleges they put up flip signs when the dorms went coed. That's unisex, and the world has not ended.
Similarly, the people (meaning men) against gay folks in the military often brought up their mortal fear of a gay guy looking at them
in a communal shower. Dude, if you weren't looking at the gay guy, how would you know whether or not he was looking at you? Eyes front, problem solved.
Why it always comes down to bathrooms and showers is beyond me-- how much time do you spend in there, anyway?