Just imagine, for a moment, how conservatives would react if four months after the worst defeat liberalism had suffered in a generation, an Olbermann (or a Moyers or a Michael Moore or a Bill Maher or whomever) showed up to deliver the keynote address at a liberal equivalent of CPAC, and during the course of his speech he blasted every Democrat who disagrees with him as a miserable sell-out, suggested that conservatives are fascists and conservatism a psychosis, lectured the crowd on the irrelevance of policy ideas to liberalism's political prospects, and insisted that the only blueprint liberals need to win elections is the one that Lyndon Johnson used to rout Barry Goldwater. And then further imagine that both before and after this speech, a series of left-of-center politicians ventured criticisms of Olbermann, only to beat a hasty and apologetic retreat as soon as he turned his fire on them. Conservatives would be chortling - and rightly so!
I'm trying to find a bone to pick with this argument, but it's not easy.