The Detroit plane terrorist knows very little about the Al Qaeda terrorists in Yemen who plotted this terror attack. Probably he met with low ranking Al Qaeda terrorists in Yemen during his training and they even probably gave him fake names about their true identity.
Maybe.
But, do you think they’d have gotten any information, even bogus information, out of him once he was given his Miranda Warning?
He was already cooked before he even got off the plane, but the potential for getting even more information was still there.