My .02 cents worth to this really interesting thread.Back when the Kingston Trio was a rage I always wondered why---they were not traditional, they were not of the quality and commitment of the Weavers(or other people from PPM, Ochs, etc)---basically they were "commercial pop folk" with a nice sound. My opinion.
Now as to the "folk scare" of the '60s---dare I say--Kumbaya. Does anyone dare do it anymore? Lovely piece---why is it used now as a metaphor for the "corny 60s"?
Any song can be used and recycled in many versions---and bring joy and meaning to new generations of listeners and performers.
BIll Hahn