"The 'folk police' can express their opinions like the rest of us but it won't change anything."
This has become one of the nastier phrases in the revival (expanded on occasion to Folk-fascists).
It seems that folk song is the only art or performance activity to be above criticism.
Expressing an opinion is just that - expressing an opinion - not "policing" the music.
Those who use it must consider themselves great performers to believe them selves above criticism.
Little wonder that the "anything goes" school of thought reigns supreme nowadays.
Jim Carroll