While this doesn't invalidate your point, I've seen recordings of people being coerced to give up their pin by someone acting like they are being helpful in getting an ATM to work. The guy of course has a skimmer and gets it later.
Card Skimmers will only copy track1 and track2 of the magnetic strip. In order to get the pin you need an additional piece of equipment that records the pinpad, such as a well placed camera.
The latter is incredibly rare. The former is your own fault. That's why generally if a PIN was provided the liability is on the card holder.