I would not call it "Gresham's Law" because I don't think there is "bad money" involved. I certainly do not consider contemporary singer-songwriters to be "bad money". They are just as important to perpetuating the tradition as the old song.

I would certainly not wish to be restricted to only playing music by a set of ancient rules that go against the spirit of folk music, a living tradition. Music is not meant to be a museum piece.