WLD,you might be interested to know that I listen to MissippiJohnHurt,Roscoe Holcomb,Memphis Minnie,Jimmie Rodgers Paul Robeson as well as HarryCox ,Sam Larner and Phil Tanner,the point is to listen to lots of source singers[ as well as revivalists],be they Blues or English Trad.
I am not a middle class asshole.I do not think that Derek Brimstone,or Ralph Mctell,JezLowe have not contributed anything to the folk revival.