"Authentic" in the age of the virtual is not a bad word-- there's nothing wrong with promoting this aspect of a writer. Underground writers HAVE to emphasize their differences from the standard prep school/trust fund/Ivy Leaguers who dominate the literary mainstream.
Undergrounders live more authentic lives, in that
A.) they've been knocked around by life a little, or a lot;
B.) they're more in touch with the lives of ordinary Americans.
To me they're the AUTHENTIC voice of America now. Nothing to be ashamed of about that!