"Pete St. John"
The bland leading the bland

That is a remarkably stupid and divisive statement even for you Jim.
There are a lot of "folk" groups perform his material on a regular basis, as do performers in "folk Clubs" and I have heard his compositions on a regular basis in sessions.
Just because you have collected material it does not give you the last word on any definitions. Many here recognise contemporary folk and much of it is heard regularly in folk clubs.

The Dubliners was described as an Irish Folk Group. How much of their material was traditional Folk and how much modern compositions?

Folk is what the people define it as, not the EFSDS and academics!