I would never say anything to you, it's your home, your rules but I cringe and I judge.
I genuinely don't understand why people prefer having a home which is unpractical. Carpets are ridiculously unhygienic, you might be shoes-off, but there's still dust. Look at the mess when you remove a carpet, it's disgusting. It also sound like so much fuss to worry about your floors constantly.
I don't lick mine, so they don't really need to be sterile. If someone drops a glass of red wine, or my kids make a play-doh mess, it doesn't matter. We wipe them clean, and move on. If we have a sick bug in the house, a quick wipe with bleach, zoflora or other and we move on.
What I absolutely hate is people who insist on taking off their shoes in my home. I don't like feet, and in the summer seeing someone bare feet walking on my floor makes me very uncomfortable. I have been knows to disinfect the floor after the worst offenders left. The idea of this happening on carpets is too gross, sorry.
I know people who are shoes off, for hygiene reason, but see nothing wrong in having a loo in their bathroom. The idea of someone having a poop next to the sink where I brush my teeth is much more disturbing than someone walking with shoes on a floor designed to do just that, walk. The handbag you put on the floor, the coat you were wearing outside, they are just as bad as your shoes. It's weird.