He was basically forced into a solo career when Paul and Mary distanced themselves from him after he was convicted of sexual abuse of a minor (he was later pardoned by Jimmy Carter) - although they did reunite toward the end of the 1970s, well after he'd served his time - so it's a little odd that you spotlighted THAT aspect of his career in this one-liner.
He's seen as a character in a couple of scenes in the current Bob Dylan biopic "A Complete Unknown," in his capacity as a member of the board of the Newport Folk Festival.