All I can say is, it's sure of a big improvement from bathrooms during medieval times xD I can't really say much about urinals. Maybe the intent is to just be faster, cleaner, as they're only for business #1 and not business #2
Maybe they're most effective in schools to get students back to class faster.
I went to a medieval festival and the urinals were just holes in the ground with no walls between anybody.
I guess they wanted full immersion.