I've been a lot of places around the world...used lots of bidets. Sometimes, you'd find yourself sitting down to pee just so you could get your spring goose early and have a warm shot of water on the old balloon knot. It'll keep you going in the early afternoon
I mean...if your kid or dog crapped on the floor, you'd probably hit it with some (liquid) cleaner, right?
When it comes to our chocolate starfish..nah...dry paper is sufficient! Makes no sense!
It's also worth mentioning that I always pooped better after eating food in other countries. That's a whole story by itself though.
I will equate this to lawnmower engines. My mower is a 2013. The engine was manufactured in 2010. They tool up and run X number of these and then go on to something else. Probably the same thing they do with TP rolls, if I had to guess.