“Cisgender people are not typically comfortable with standing in a bathroom of mixed genders”.
Actually that is just an American thing and I hope we get over it soon. In Europe, there are a lot more unisex bathrooms. Some with urinals that women walk past on their way to stalls. In Asia, it is very common to have two sets of stalls, but one washing area to save on space.
A few of my trans friends just use the handicapped bathroom, when there is one.
Only in America can bathrooms become a major political divide.