If the hoary handed sons of the soil in days of yore had the same   opportunities as available today, they would have been after copyright and a few bob just like rats up a drainpipe. The world has changed. To have traditional means of generating folksongs means to be trapped in a timewarp. To use a word such as traditional has the implicit meaning that the genre is fossilized.
What gives anyone the right to say that a modern derivative is in some way pseudo or even fake.
The car has replaced the horse. Does anyone have a problem with that?