Athens accents are somewhat affected by the university, so the Appalachian accent is often less notable or nonexistent. I am from the local area (born one county over) and I do have it, but I have noticed that, for example, a lot of the professors' children, while they still grew up here, do not have it. Full disclosure that I haven't listened to the video, but I'd sooner think that if it was anyone from here, it was a colleague or spouse of colleague rather than a patient (huge ethical can of worms there).