Blaming your problems on some unseen omnipotent boogie man is just an excuse for people not to take responsibility for their place in life, and also for them not being happy with what they have.
This particular conspiracy theory is in itself extremely depraved. Basically telling people that the boogeyman will stop you from success so don't even bother trying. Nothing is more soul crushing than hopelessness.
Removing hope makes people extremely easy to control. Even if this monstrous shadow government seeks to deprive us of all joy, it knows people must do so voluntarily.
I think Carlin's message is that of the conspiracy to deny people hope. Thus he was a pawn (unwittingly or otherwise) in the conspiracy to jam that giant red white and blue phallus into the people's collective arses. It just seems that some folks are patient enough to wait until the people are willing to accept it.
"There is truly no use for a poet if the hopeless seek no bliss."-Neil Fallon/Tim Sult-