But I’ve never seen one try to sit in one of these.

I’m calling fake news on this one.
Men shouldn’t stand to pee, but sit like Germans do, urologist says – A senior urologist claims that men should not urinate standing up but should instead sit down. Here, the Germans might have the right idea.
PS: Personally, I’ve heard nothing but disdain for men who sit when they piss, but maybe that’s just the questionable crowd I hang around with. See “sit pisser:” Sitzpisser = Sitzpinkler = Turnbeutelvergesser = Warmduscher = Nullschecker = Regenschirmmitdabeihaber…