As much as I would love to agree with you, I'd have to go off board on this one. As well as a mentalist, Derren is not one to go for the paranormal or conspiracies. He is a rationalist and skeptic. Watch some of his specials. Miracles, The Experiments, Enigma, Svengali.. A lot of his performances are dressed as spiritual to get people hooked as well as slapping it in the face of those 'supreme people' that he can do everything they did and even better. Although I do get your point. Maybe he's just using all this patter about psychology to hide his true power. But that's not likely the case. The guy knows people WILL think he has some sort of supernatural ability despite being openly a paranormal skeptic. He uses a combination of mentalism, (at times) normal conjurer techniques, ACTUAL psychology strategies, nlp, hypnosis, and (what makes it extremely believable)huge ammount of showmanship to complete his shows.
Usually I would be in curiousity myself but this is just not one of them. I enjoy him already for what he does. Cause even those normal skills which appears to be supernatural or mystical takes a lot of studying and training to make believable.