Kendall: Take yeah, yeah yeah out of their songs and what is left?

This shows how many of them you know anything about. They've got yeah yeah yeah in exactly one song. Oh yeah oh yeah in another. Oh yeah (just once) in a couple more. 5 songs, maybe 6, out of over 200.

What I like about folk music is that it informs as well as entertains.

Oh yes, I learned so much from The Banks of the Ohio (people kill other people) and Foggy Foggy Dew (people do mysterious things that are wrong but don't say what they are). Need I go on?

If you never learned anything from rock music it must be because you stopped listening after the 6th Beatles song.

I understand not liking the Beatles. They did a few things and not everybody likes those things. But there's no need to employ nonsense to defend your position just because you think it's unpopular.