Why do liberals despise Rush Limbaugh more so than, say, conservatives hate Bill Maher or Chris Matthews?
Yes, he is vastly more successful and influential, and does them, as the president so frequently whines, a lot of political damage. Of course, the Left hates the fact that Limbaugh went from middle-class to a billionaire, and without the proper educational credentials and anguish along the way to contextualize his wealth.
(Keeping millions of listeners entertained for three hours, 250 days a year, is supposedly easy; in contrast, teaching a graduate seminar fifteen times a semester on your dissertation is an ordeal, full of deep thinking and contemplative heavy lifting.)
Talk radio is the antithesis of NPR — loud rather than soft; throaty rather than nasal; commercial-full rather than ad free, its ideology sustained by the market not the public purse.
…Limbaugh lets others worry about footnoting, tweaking, and nuancing his diatribes. His one-dimensional self-assurance drives liberals crazy. He too is uppity, without a shred of recognition that others far more sensitive, educated, and aware deserve his megaphone.