DS eats food that has been dropped on a clean(ish) floor at home. Not nasty food, just food I'd eat myself.

OK so he never played on a shopping centre floor, but that's only because I didn't get to take him shopping too much! He played on MiL's floor which I'm sure is worse sometimes. Floors in public places, like Churches or whatnot, were fine for him.

If DS were crawling around and eating other peoples' dropped food, that would be something I wouldn't do.

BTW, I don't judge. Honestly. I don't. Not for more than 5 seconds at any rate! It isn't my place to judge on a five-second snapshot of someone else's life. I'm sick of being judged that I'm very critical of myself if I do find myself doing it, which is less and less often these days.