I absolutely refuse to accept that I charged Moore with naivete, alarming or otherwise. To the contrary, the passage you misrepresent states clearly that Moore would declare himself "aware of the flaws in the system", which hardly makes him naive. I have known naive communists, like the poor old man on a bus in Rome, telling everyone who would listen of the vast provision of free public swimming pools in Moscow; people who were never reached by any rumours of secret police and death camps, and who, if they were, would find it easy to dismiss them as capitalist-clerical lies. Moore is too wide and comprehending a reader for this kind of nonsense. As for the line he would take, I extrapolate it from his work. Adding one thing: that a major line of defence for Moore would be tu quoque. In his world, capitalism and American imperialism are so bloodthirsty and distorting things, destroying the soul even where they did not distort the body (you must remember that he is a great admirer of Berthold Brecht, with his theory of the spiritual "alienation" of people under capitalism), that if it could be overthrown, any measure would be justified. That is the argument of pretty much every Communist supporter.
"alarming naivete"