good comment today by Jack Kimball re these issues. I agree, though it may not seem like it. At least I agree if one is willing to think of the Bible, the Constitution, Shakespeare, Keats, Pushkin, Poe, etc. also - along with Dickinson and Whitman - as "folk art".
Authentic "fine art" is sophisticated art which has kept its roots in reality, experience, feeling, truth. Like authentic folk art.