A polite request. Can we distinguish please clearly between 'Fakesong' the book and 'fakesong' the phenomenon? Otherwise things could get confusing.

As far as I'm concerned fakesong implies deliberate deceit on the part of the faker so this isn't a general discussion of how songs are passed on.

Apart from a very few examples none of the first revival collectors claimed their published songs were not bowdlerised and all of them left us with the corpus of material as taken down to best of their ability. Any deception came in the form of how and where the songs originated and in that sense there was definitely an agenda well documented.