Human rights
Human rights
Imagine the filth in your average public restroom.
Now imagine if they were all designed with powerful fountains that spray water up and out of the device if not intercepted by an anus.
I’m pretty sure “this is why we can’t have nice things” is true in this case, just pre-emptively.
Surprises of that sort aren’t really the problem, tho that would be… wild.
The intentional abuse of the devices would be the problem, as would unintentional misuse (eg they are in the wrong position and it misses entirely, or they don’t know what it is and mess with the controls while standing in front of it).