So.. If it is a folk song, it has to be a folk singer? Ergo indeed..,

So when Walter Pardon sang a music hall song for The BBC, his reputation as a folk singer was shot!

Do think things through Jim. You see, in your own limited corner of folk you have a degree of credibility. It's your insistence that folk begins and ends with your 1% of it that puts you in the list of odd people who say daft things.