We have two basic and testable hypotheses in the one basic short sentence of " Bush was not a bad guy, It was his administration running things behind his back." And hence, each of the two premises are somewhat both stand alone premises, and then also need to be tested as the interaction between the two. So we have a two by two decision matrix with 4 outcome boxes.
1. GWB, by himself, may not have become a bad guy. And may have become some Joe sixpack living on his daddies inherited money, lacking the intelligence to contribute to society, and wallowing in ignorance.
And after living a life of sloth, drunkeness, and drugs, he met this wonderful girl, became a born again christian, and instead of being a drunken son of bitch, became a mere son of a bitch. Who wants to have a beer with a boorish teetotaler?
2. The premise that the team GWB took to Washington were totally morally bankrupt nuts with special interests agenda's is a slam dunk. People like Karl Rove, Dick Cheney, Donald Rumsfeld, Condi Rice, and so many others, sadly people of great ability with a lust for power and in love with their untried theories. And so convinced that their theories were correct, that they could ignore the suffering its brought to many millions as the ends they wanted justified any means.
3. The premise that GWB was still a good man but was corrupted by others around him is dubious at best. GWB took seeming delight at getting his way and having absolute power. His way at getting back at those smarter than he was, GWB is simply a bully at heart.
4. Only in the last square is any redemption, had GWB not surrounded himself with really bad advisers was it possible for his administration to be better than the complete disaster it became. GWB did not, he unerring allowed himself or others to choose the worst of the worst, and that is the way history will almost certainly call it.