Not sure, but if memory serves me correctly, when the back country fees were originally proposed, it had something to do with the terrible condition that some folks were leaving their campsites, as in refuse on the ground, small trees chopped down, and that sort of thing. Don't remember where I read that. It might have been on the GSMNP website.
Don't really think a fee would stop people from doing those stupid things, but it might help offset the costs of having someone else come in and clean it up, if that indeed was the intent.
-don't tell me why we can't, tell me how we can.- whitefeather
Blue skies, warm gentle winds, and trout filled waters to all!
(Wilu Sgis, Wami Tsenitli Winidis, Ani Tiwuti Wiledi Weitas Do Ali!)