Note that that was written late in the 2012 presidential race, when there was considerable doubt that Obama would win a second term.
How many of those wienie wringers still in the party now and whining about Biden? Must be a whole bunch. But like good politicians in either party right after the win they are fully behind the winner. Nothing they said before gets any accounting.
Which I think is a huge problem with congress and all politicians. They can say one thing monday, and the exact opposite wednesday and the American people are supposed to accept that that is okay and just politics. And the politician just walks away never accountable.