The Cabela's article was right on in our opinion.
As volunteers in parks we have spent many hours picking up cigarette butts, pop/beer tabs, candy wrappers, etc. We have cleaned out firepits before your arrival which contained leftover food stuffs, cans, bottles, dirty diapers. Would you have wanted to cook over your fire if we didn't clean it out?
In a popular national park we dug out to 2' deep around the water faucets along the roads. Water was being left standing. The reason - toothpaste, hair and garbage from dishes. The faucets had a sign at each faucet 'no washing of hair, dishes or teeth'. That was not a fun job!
In another national park someone emptied their porta-potty in the outside kitchen sink meant for campers to do their dishes.
In the same park a couple weeks later a man chose to get into that sink after dark and take his bath.
A park had a state-of-the-art stainless steel fish cleaning station with a donation box. Upon opening the box it was filled with fish guts. We did roadside cleanup near the fish station and picked up dead fish carcasses.
Yep. That was a good article.