"Glueman - the expression "community" in the 1954 definition has to contemplate discrete communities, not a whole nation. Think about it. The question in modern times is whether a "community" needs to be physically contiguous, or can be connected in another way - as an online community is".

Nice try. The question in 'modern times' is whether folk means people who belong to clubs and sing in the back rooms of boozers. I put it to you in all conscience that it clearly does not and never did. Hobbyists and enthusiasts and historians are not The People. Not now. Not ever.

As for nationhood, why bother talking about English folk music if the nomenclature has no meaning?