Sorry, I realized my message may not be clear. What I meant was, as I understand it, what Campbell presents is not a phenomenological Theory of Everything in the physical sense. What he means, from what I understand, is an idea that accounts for the unconscious realm, the realm of human perception, the realm of superstition, and all various understandings of reality. I cannot imagine his theory has predictive power. From what I understand, he is saying, "I know everything; you just need to read my books."
That he is a paid, respected government physicist, and (it seems to me) his agenda is redefining the meaning of TOE so that he can claim to have solved the problem, is bizarre to me. I know that he practices aura medicine and the like. But then, I haven't read the books. His work is probably not well known, though.