are you sure about that? Literature from the South has been one of America's most successful cultural exports. It's the land of Faulkner, Mark Twain, Eudora Welty, Cormac McCarthy, Alice Walker and many of the greats.
...Flannery O’Connor, Carson McCuller, Robert Penn Warren... the list is massive. I’m not sure the OP realizes how offensive they’re being by implying lower standards. If anything, they set the standard for american literature.