Jim you seem to wish to twist so many reasonable responses to your assertions. The fact that Offa Rex's version of folk songs will be heard by thousands does not make their interpretation into a 'pop' song such as are in the pop charts. It does make it popular and, as I say, likely to be heard by many people who may take an interest in the source material.

I know you are passionate about keeping folk music alive but you seem resistant to anyone who is doing that in any other way than you consider gone acceptable. Surely making the songs more popular is a way to help them survive? Otherwise they will die out with us.
As Dave says Steeleye Span are still touring, Home Service reformed, Albion Band are still going, Fairport still tour, lots of younger artists are taking innovative approaches to folk songs so folk rock is still very much alive - thank goodness!