How vacuous?

How intellectually vacuous is "Planet Corner"? Matthew Yglesias chronicles the feud that results when a fellow conservative dares to criticize Rush Limbaugh:

...look at what happens after Cato’s Jerry Taylor offers some criticism of Limbaugh at the Corner. All hell breaks loose. Katherine Jean-Lopez attacks Taylor. Mark Steyn rebuts that she “should have been harder on Jerry Taylor’s post.” Taylor defends himself then K-Lo fires back expressing shock that anyone would dare accuse a talk radio host of at times deploying invalid arguments* while Rich Lowry agrees that Rush is wrong about stuff but insists that he should be immune from criticism anyway. K-Lo, back for more, gushes that Rush has a large audience so everyone had better get in line.

Once again, this is what conservatism has been reduced to. It'd be funny if it weren't so sad.