Yes, greg, JL is in a minority of one, and that is the point. I don't know if it matters whether the people who object to his stubborn refusal to back down on this point are musicians themselves or not.

The principle is easy for anybody to understand (except, seemingly, JL), even if they know nothing about folk music at all.

(I'm a musician but nowhere near well-known enough to make it worthwhile 'coming out' from your point of view :-))