I think sadly this is quite common: mainstream musicians, DJs and promoters are quick to categorise performers as one hit wonders (or even novelty acts), without realising those people often go on to have a long and distinguished career in music, with a loyal army of fans, but out of the popular music limelight. All of which has says a lot more about the fickle attitude of the popular music business than the integrity of the roots music scene, of course.