You're not getting it. If he really wanted to hide being psychic, why would he draw such obvious attention to himself?
Money, fame and because he knows phsyic abilities are not accepted in science and is probably not accepted by most of the public so it's fairly easy for him to give alternative explanations that are simply based on him having superior intelligence.
And Derren is has already admitted that it was a problem for him when dating women (he's out of the closet now). They always thought he was reading them. So it wouldn't matter either way. They still thought he could read them like a book.
He may have not seen that coming and I don't think it's in the same league as actually explicitly reading someone's mind but I respect your argument there.
I haven't called anyone names. I'm just stunned at some people's logic.
Everything I'm arguing is hypothetical, in no way do I think he is most likely psychic.