The paranormal paradox

I've been pondering a truism that I sort of coined... that while paranormal phenomena are undoubtedly "real," the most vocal and visible proponents of said phenomena are frequently exposed as fraudulent.  I think that this paradox can be understood only in the context of a self-regulating system. What better way to enforce conformity to the accepted laws governing our physical world, than by the punishment of miscreants who try to peek behind the metaphorical curtain?