It absolutely baffles me that the same people who freak out about the possibility of there being germs on their kid's pacifier will wipe up poop with a wet wipe and send the kid on their way.
Even as an adult, I don't get how people think of toilet paper as having any "cleaning" power. It just seems wildly unsanitary if you bother to think about it, which is why I suppose most people choose not to.
Use the right cleanliness tool for the job. For a sidewalk, powerwash it. For a cast-iron pan, you wipe it out and maybe use oil and salt.
That's not to say that a bidet isn't the right tool - but the justification needs to show why it is the right tool, not just point at other body parts and say "the right tool for my hands is soap and water, therefore the right tool everywhere is soap and water."
Yes, you're probably better off not washing it out every time you use it, but if you make chili or something like that, you're going to want to wash it out at the end.
Just after you wash it, put it on the stove to dry it off, then rub some oil into it.
The only exception I can think of to soap and water for cleaning is delicate fabrics or sensitive optics, but there the issue is the liquid used rather than the general process.
It's not as sensitive as mouth though. We don't use soap with grit and fluoride anymore to clean teeth and mouth nowadays.
Relating to my comment above, we let our kids wander around the house naked from time to time. I feel perfectly comfortable letting them sit on the furniture because I know they aren't spreading poop everywhere.
But then again, people let their pets inside, and they put even less effort into post-bathroom cleanup than humans do...
Do you own pets? Most don't need post-bathroom cleanup. They have different anatomy, imagine that.
EDIT: They also don't poop in unnatural positions.
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