"what you consider to be the only true 'folk' versions "
Don't remember saying there
Their ain't no such thing I'm afraid, you must be thinking of someone else
It doesn't matter how many people here itt - that would make every song on the hit parade a folk song - that would be silly, wouldn't it ?

"People still listen to, love and perform folk rock you know,"
As they do first wold war songs - the scen abandoned Steeleye and Pentangle and the rest in the last century
Jim