Some of us are more interested in the degree of dishonesty involved in some of the mediation. As far as I'm concerned the vast majority of any of the mediation in the small world of 'folk' has either been positive or at least neutral.

e.g Bert. Ask yourself the question...would you rather have Bert's sometimes dishonest mediations with the songs and their histories, or nothing at all? I know where I stand. That doesn't mean I don't wish he had been more open about his interventions.

e.g., Cecil Sharp. Ask yourself the question...would you rather have the fruits of his 'mediation' or nothing at all? I know where I stand. That doesn't mean I don't regret his leaving people with the impression that these songs were made up by ploughboys and milkmaids somewhere back in 'Ye olde Englande'.

You can apply that principal to all of the collectors/editors/mediators/folklorists or whatever.