"It would be great if there were lots of 'purist' folk clubs for those that want them"
"Purist Folk clubs" is like saying "purist greengrocers or "purist" stationers
Folk is what folk clubs are supposed to do - that's our product identity and it's what we contract to give to those seeking it
Folk Clubs are struggling to keep going because those interested in folk can no longer find what they're looking for and those seeking something else can find it far better done elsewhere

"extremely mediocre renditions of old pop songs mumbled by people who are not particularly good"
Wish I'd said that
Jim Carroll