i think urinals are only useful in places with LOTS of people with dicks who’ll need to take a leak, places like stadiums and such. It’s not really about them being more space efficient (it’s not a very big difference anyways) rather it’s about them only being for peeing and thus you can cycle a lot more people through them quickly. It just means that anyone there with a dick can at least feel reassured that they don’t have to wait ages to take a piss.