Didn't they invent a loo a while ago that had automated loos seats? When you'd used the loo, the seat would slot into the wall, for cleaning, and the second one would come out for the next person.
A version where the seat is rotated and (I assume) disinfected if you activate a mechanism by waving your hand in front of it, has been commonplace for years in Germany.
Mostly at very expensive motorway restrooms, but they do exist.
I admit I still don't sit on them. Hovering is ingrained in me when it comes to public toilets.
And I think the desire for toilets you can sit on might be a cultural thing. Perhaps people who grew up with squat toilets prefer those?
vestal of course it denies women's biology - we don't have penises we can point and piss?
It seems they are designed for squatting over, though? That is totally combinable with female biology. You may not find it comfortable, but it doesn't deny biology.