Why does disliking a performer tell you more about the person doing the disliking? The folk revival is predicated on a reaction to the commercial music around at the time, the whole thing was created by 'haters'.
I happen to think Bellowhead are a good night out but I reserve the right to dislike all kinds of music and musicians for all kinds of reasons. The woman whose quote triggered this thread was cheesed off with what she heard, her tastes may not be honed to the revival or she may have a very elevated musical palate. Either way it's her right to gob off on an internet forum. That's what it's there for, unless someone knows different?