The troll said I was "Either lying or an idiot", but I am neither a liar nor an idiot.
The troll is both. In my youth Gaughan, Imlach and Henderson were unheard of. He knows nothing of Scottish folk music.

Folk music existed long before it was taken up by the left, in fact, even many of the revival groups and singers were in no way left wing.
"Protest songs" were the first intrusion of politics into folk music, it gradually killed the genre and after a transfusion of financial aspiration and education, it is completely extinct.