Lenny, I am inclined to agree with Barry Finn and certainly don't want to get involved in yet another round over BS.I think that you will find that most (if not all) of the people that contribute to the BS threads also have a genuine interset in folk or blues music and do make contributions to the music related threads as well.
Regarding the 2 people you named, I can also assure you that I have had several personal exchanges with KatLaughing, not idle chat but swapping folk songs and tunes and as far as I am aware, BanjoBonnie is taking lessons from Rick Fielding... neither of which seem to be actions of people who have no interest in musical topics.
Jon