TItle: "Self Cleaning Seat (in F)"... Am I the only one whose mind jumped straight to "self cleaning seat" along the lines of automatic cleaning ("self cleaning toilet")?

No doubt someone who is neurodiverse, or with OCD &/or germophobia which leads them to a very thorough cleaning. This seems more thorough than many people who do give various surfaces a wipe over.

For me, rarely see the need to clean anything on a plane (other than toilets in economy, particularly towards the end of the flight on certain air-roo-lines), and SQ crew do a great job in all cabins at keeping toilets clean. Probably most important to maintain good hand hygiene when using hands to ingest food. Between my clothes and skin, which offer a good degree of protection, and the cabin environment, I am not terribly worried about germs and disease on board planes. And honestly can't pinpoint getting ill from something I picked up in a flight, in well over a thousand flights.

When travelling plenty more to worry about, and for years I travelled to rural areas in countries like India, Bangladesh, Indonesia etc, so it's all relative.