I have traded in vehicles with Armor-All on every rubber hose in the engine bay, sparkling brake calipers, sterilized wheels including the back sides of the wheels, not a speck of rust anywhere underneath, not a speck of dust on top, fresh grease poking out of all zirc fittings, highly-polished surfaces everywhere, etc. and they don't give a shit. All they care about is make, model, year, mileage, and is it on fire?
That said, it's a sign of a civilized man or woman if you take care of your stuff. I just had a touch-free car wash for my GX last night and then hand-dried and buffed it and quickly got it in the garage before any dust had a chance to find it. My cargo bay, however, still has wood and dirt and tools in it. It's a work truck. I did put some of the car audio speaker carpet on the plastic side panels a while ago and I guess it helps. I'm sure there will be a sticky mess left when I go to remove it and I'll regret it.