there are people who aren't actually sold on the idea that 'traditional' is the folk music of these islands.

I know - that's my point. There are lots of people who don't believe that 'folk' equals 'traditional', and (in my experience) those people suffer no intolerance whatsoever. In fact, in my experience some of the people running folk clubs and singarounds are the most open-minded of all. I've never met the folk police; I don't believe they exist.