First, the man has his own account here, in his own name, and at one point was a regular contributor.

Second, the trolls have a really bad habit of simply regurgitating NPV propaganda, even in response to well-reasoned questioning.  (In that regard, they're at least as annoying as the paulbots.)  Saul, on the other hand, is perfectly capable of putting together an intelligent argument, even when he's dead wrong.