To be honest, I've never heard any comedians really ridicule folk music to any extent that matters. To be sure, there have been parodies of folk singers and folk singing through the years, from the Two Ronnies to Reeves & Mortimer. But I don't think any of it sticks. And if it does, so what?

There will always be someone who takes the piss out of what you do, or dislikes what you do, no matter what kind of music you make, simply because everyone has different tastes - and you can't please all the people all the time. Who gives a toss? I've never let it bother me in all the years I've been playing, and I don't intend to start now. As the great Fields (may have) said, "Fuck 'em!"