Absolutely, Dick.
There are many traditions and if we recognise that some are recent, some are ancient, and 'all stops in between' then there's much less to debate about. The oral tradition that existed almost everywhere a few centuries ago is now only to be found in a few isolated pockets. The 2 folk revivals set up new traditions and any qualitative comparison between any of these is just down to mere opinion and preference. If Joe Bloggs wants to set up a museum, sorry, folk club, that allows for performance only of the old tradition then he's perfectly entitled to. Likewise if SOE wants to do the same with only more recent songs; and all stops in between.