The DUmmy food fight over Carter and the 401k is indeed a delightful look at full blown DENIAL Not the river Nile but a fact of life all DUmmies have to embrace at one time or another if they are to be able to exist as a loyal democratic.
To expand, some years ago I ran across a most interesting thread at the DUmp on
Nixon.* Periodically DUmmies manage to rub the lanolin off their peepers long enough to glimpse Truth. Once thus confronted they violently shake their collective heads back and forth, plug their ears and sing la la la then go back to worshiping the party symbol de jure.
*this is a great thread for those who wish to take a trip down DU memory lane.

What makes a good DUmmy? I guess it would have to be the slavish belief in the mystical good done by 'the democratic party'. Only their support for the one true party meme via whatever means will ensure the glorious end they envision. That end varies from DUmmy to DUmmy and is largely tied to the latest populist fads; it is how they conceive their God.
Their pseudo religious belief in the greater good has supplanted a more traditional religious belief in a supreme being. Obama is their supreme being (at the moment), Washington, their Mount Olympus. Their Gods and Demi-Gods serve in the House and Senate. And at any moment one is likely to hear from the Chorus, Et tu Brutis? as a favored potentate stumbles to the floor from a dagger in the back. They pile 'em up like cord wood. Who will be next to incur their wrath? Barney the purple pedophile? Alan of Grayson? Lizzie the cheeky Cherokee? Nasty Nancy or Hapless Harry? Hard to say which but certainly one or more will be found to have feet of clay.
This is what makes it so darn easy to poke fun at these self declared noble, egalitarian, assholes. They don't see the odd positions they convolute themselves into. Contortionists are fun to watch even if they are largely freaks of nature. Then too it is hard to turn one's head in horror from a train wreck.
They publicly eschew Nixon while embracing Carter but in more private, lucid moments they admit their goals where better served by Nixon and that they were screwed over by Carter. That is why they are DUmmies.