After some research, page 10 of Google, to be exact, I found this review of Deliverance written in the Nashville Scene.
http://www.nashvillescene.com/arts-culture/film/article/13037765/deliverance-remains-the-movies-most-chilling-portrayal-of-nature-making-man-its-bitch
The author, Craig Lindsey, claims to be from Texas (which obviously is not even part of Appalachia), and agrees with the fact that there are redneck rapists out there in the woods waiting for victims. This opinion struck me as odd considering his roots, but then once you take into consideration the fact that he first watched this as a 12 year old it offers some form of excuse for his argument that the toothless yokels actually exist somewhere (probably right over that hill next to the Shakespearean village). His misunderstanding of what Appalachia is shows a lack of research into the region prior to publishing this article. That also means that there was no Appalachian voice in this article. However, near the end of the article he did argue that the movie did nothing to change the negative stereotype of the backwoods South, describing a transition to the “ignorant, racist, redneck rapists.” He chooses to focus on the subtext to the negative stereotypes. He takes the rape of Bobby as a metaphor for the nature of man to try to control nature. In a way, this author believes, the damming of the river (and likely the cemetery relocation) was the deeper meaning to the initially traumatizing.