You might need more compelling logic than an indefinable something before anyone gets to ringfence music definitions for the rest of us. My background is not a folk club so bad authentic singers and competent inauthentic ones go right over my head.

I buy traditional music I like, consume, purchase in the market place, attend festivals if there's someone I especially want to hear but as far from a back room creation of the good old days as it's possible to imagine.
Where do we devourers of songs go when the clubs don't serve our requirements for folk?