Maybe they were just stuned ;-). And there weren’t more than one or two.
I suppose if a man went to change a baby’s diaper in the ladies’ room, it wouldn’t be a big deal. Women are behind closed doors.
But that’s a totally different subject.
Women are, appropriately, creeped out when men are in a women’s public bathroom. Despite my screen name, I have known a few women in my lifetime. I notice that men will go to the bathroom with the door open, or even while their partner is at the sink. Women invariably close the door and do not let their partners in when they are answering nature’s call.