And, since we are supposed to be dicsussing 'Fakesong', here is Harker's take on Sharp's attitude:

"No consideration is given to the idea that it was [...] the broadside[s] which were the essential elements of cultural continuity and dissemination. Professionalism and commercial song-culture were, evidently, to be discounted."

This is pretty close to the exact opposite of what Sharp wrote in he passage I've described.