> scholars today are receptive to the many ways performers and audiences conceptualize what they (performers and audiences) call "Folk," and in their own work, seek more precision and terms that reflect the latest and best (not 1950s) ideas.

And at the same time non-scholars are using the word in whatever way suits them. There is simply more than one usage, and like many thousands of others that we live with, the most inclusive is far more so than the most narrow.   

These are obvious points.