"To be an "entertainer" however is to seek merely to occupy the mass mind: a mind by definition usually vapid. A folk singer by defintion has roots in history."

Yep I agree with all of that.

Entertainment is not defined in it's genre. It can be Folk. But on the spectrum of Folk from accademia to accolade there is actually an over-run where the Folk element is all but superfluous. And that end point is very easy to define for one person. Impossible for a cohort even in a Folk forum such as this.

And, we haven't mentioned C&W yet. Or line dancing! - sorry I will wash my mouth out - immediately.