There's no logic to this particular attack, it's just emotional and catch-22 silly. It starts with the false premise that, to support Obama, we have to believe he is some kind of political god. But of course, he's not one. So therefore, all Obama supporters are koolaid drinkers. Sorry, wingnuts, this angle won't win you many votes.
The reason is because it only ends up reinforcing the general consensus based from the actions of his own campaign that, while Obama may be too liberal in ideology for some, he is also pragmatic and conservative in action. Rational and not too hasty. This contrasts against McCain's "maverick" campaign which seems to jump, willy-nilly without thought or reason, into every political pool without checking the water first.