In my local city there was conservative article about unisex bathroom putting framing it as transgender thing.
The bathroom was unisex when I was a kid, when trans were universally mocked. Bathroom is unisex, cause there is exactly one toilette in a small cafe in a super old building.
Unisex bathrooms mean women get to clean the bathrooms again because men can't be bothered to aim or sit.
You can file that one with the other bathroom myth: cleaning staff knows that the really, really filthy bathrooms are the women's bathrooms¹.
People are (and have) assholes. Hardly an argument against unisex bathrooms.
1: https://www.rsvplive.ie/life/womens-toilets-much-dirtier-men...
I miss the days of Ally McBeal when unisex bathrooms were hip and the future.