The credits for the Coens'
They mention Van Ronk frequently but also insist that the character isn't based on him, outside of a number of similar details. And indeed Davis' whiny but sympathetic personality owes a lot to the Bob Dylan of
The most questionable aspect of the film is the decision — and it had to have been conscious — to stick entirely to the music world, with barely a nod to the political/cultural context that was crucial in the forging of the early '60s folk music explosion.
The lack of further supplements suggests a fuller edition down the line. The related concert film — "Another Day/Another Time: Celebrating the Music of 'Inside Llewyn Davis'" — would have been nice, but
Inside Llewyn Davis (Sony Pictures Home Entertainment, Blu-ray, $35.95; DVD, $30.99)