Much like Rush Limbaugh.
Their "power" (position, status) goes to their head. When one gets “power”, they start to believe that they are an authority. Whatever they think or say “is”. Soon the masks comes off and they “real” them surfaces. The deeper they go in, the harder it is to get out (and still save face). Many of them don’t even realize how deep in they’ve gotten. To them, their rants sound perfectly logical.