When you read it, 682 is more restrictive in some areas than 680. You don't need any grid under a pool pump or the disconnect for it.
It is amazing that these things languish in the ozone until a week after the code gets adopted by the AHJ. This is something that could cause a lot of trouble if you really took it to the logical conclusion. We could really blow up in your face if you started redefining "natural bodies of water" and didn't put a limit on the man made bodies of water this applies to. Is this also for a little koi pond on your yard?
I think things like golf course lakes and retention ponds are exactly what we are talking about and there are millions of them here in Florida. Virtually all of them have some kind of electrical equipment in them. Usually they are maintained by the greenskeeper or building maintenance man. I would be happy if they just got rid of the "flying" wirenut splices and missing EGCs