Depending upon how deep down the rabbit hole he goes with the Fed's illegitimacy, etc. If he doesn't reveal some of the yuckier truth behind this organization / that it's not a governmental agency / etc. then he is either (deliberately or unintentionally) muddying up the waters (which would make sense on Fox).
At least criticism of the Fed is becoming du jour, but Stossel likes a good wank just like the next high-profile reporter does.
(Honestly, I don't fully trust the guy [don't care what books he's written]. He's just another MSM maggot--even if he does drop the veil a little lower than most others. When he stands up and puts his career on the line to take it all the way, then I may change my mind.)
What would the Founders do?