@tylermunns Agreed, but also they're two completely different iterations of the genre: one steeped in the traditions of bluegrass and frontier folk, while modern country is a cousin of contemporary rock, specifically southern rock and Americana.
Having played in an alt-country band for many years, it was interesting to see the audience reaction when we covered much of the canon of those you named versus when we would throw in a Kenny Chesney, Brothers Osbourne, Eric Church, or similar modern artists. The former always elicited a lot more smiles and applause than the latter. Usualy because the audience was older.