This is the sterotypical response of a sociopath caught in his web of lies. It is generally followed by another untrustworthy statement as if the audience accepts the premise of regaining trust.
It's the blindness of a pathologically arrogant narcissist. Since he's the only person on earth who really matters, he's never bothered to note that others are real people who have feelings, thoughts, likes/dislikes, self-determinism, goals/dreams, etc.
It's not real to him that others have as much or more intelligence than he has, or that they're capable of having insights or understanding at a level that exceeds his own. In his mind, other people are merely warm bodies who require someone like him to shepherd them through life. They're really too stupid to direct their own lives without the guidance of him and his fellow social engineers.
Such a warped personality has to be stunned when the little people react with real anger to his multiple lies. Who knew they had the intelligence to figure that out???