wordy:
Nobody much ever minded when a singer songwriter dropped into to a folk club and sang a song. It was ,of course, the ideal environment. And some of the songs, as you point out, will be the folksongs of the future. The objections tended to arise when the club was taken over by singer song-writers( sometimes a 100% takeover as I described in a recent post).
    A pigeon-fanciers society can accommodate(and enjoy, and learn from) the occasional visitor with a budgerigar or vulture. But when the poor old pigeon-fanciers who satrted the club become a tiny minority and get called bird-nazis, it becomes a bit sad.
    But of course the folk world must innovate and write songs. The old definition of folk distinguished it from other music by the fact that the music must be changed and taken into public ownership by communal action. If it wasn't recreaTED, IT WAsn't folk. Preservation is anti-folk.