Van, you've about hit the nail on the head. Ade thingy's appearance on the programme had nothing to do with any authority or expertise he may or probably may not hold on the subject of folk song. It's the old story of celebrity talking heads = viewing figures. Doesn't matter a twopenny damn if said talking head actually contributes anything worth while. Just so long as Joe Public can say "Saw Ade what's his name on telly last night. Said something funny about folk police."

(Thinks:-

It's legal to sing on the telly
But they make bloody sure that you don't
If you sing about racist & fascist & creeps
And thieves in high places who live off the weak
And those who are selling us right up the creek
The twisters, the takers, the con men, the fakers
The whole bloody gang of exploiters.) Ewan MacColl.