And this is the 'just want to pee' point really. 'Go about their business'? Really?
And can you tell us what the female people who have needs that extend beyond the privacy of the cubicles are to do since you have blithely given away their spaces?
Female people have always used the female toilets for a whole lot more than just peeing.
Here are some of the things that I have personally used the toilets for and where I would not have wanted to have any male person in that space at the time:
-Having a pram/pushchair jammed into the door way leaving it wide open while, dealing with a tired crying infant and all the weekly shopping while dealing with a flooding period. This still happens, not every where has family toilets that are working at the time.
-Had to help my elderly mother go to the toilet when her wheel chair mean the door could not close due to space and wipe her down all while she is exposed to whoever walked by. I couldn't leave her on the toilet to push the chair out because she would fall. The disabled toilet was out of order.
-Had to clean my skirt due to leaked blood.
-Had to clean my shirt due to baby vomit / food spillage. In fact, in the past three months I have walked into female toilets a couple of times to find other women with their shirts off, standing in their bras drying their shirts. This is not unusual.
-Had to get changed between jobs and had to do it in the public space due to filthy wet floors.
Then there are the women who have come to MN to discuss having their miscarriages in toilets and one woman even discussed help to deliver a baby in the female toilet for a young woman because that baby came while waiting for the ambulance.
If you think 'going about their business' for female people stays locked in a cubicle, perhaps you have lived a privileged life or you are not a female person.