I think they exist under the effects of a field very similar to the Somebody Else's Problem generator. However, instead of your classic SEP, they have I Am Better and Nobody Else Matters generators installed at birth.
From the moment the generators are turned on, they are oblivious to anything except their own brilliance. Point out a failing in the their work? The failure is in you, a failure to perceive their brilliance.
The net effect is not dissimilar to the I've Got Money Therefore I Deserve Everything generator, installed in the children of (some) rich parents.