His idealistic view of the American civics process he cherished since school days is being besmirched. Maybe he thought the worst sharks were only in the business world. Many are surprised to find that mutual self-interest keeps things going forward in many instances in business, cutthroat though it may be. The GOPe seems to have a talent for self-destruction; not even self-interest seems to penetrate their silos of delusion. A pox on both the established parties.
This DOES seem to suggest he has grasped a set of principles, however idealistic and impractical they seem to us, despite the accusations of others.