As opposed to ad hominem attacks by leftist, which tend to strengthen their articles (being that they got nothing else). Look, in the case of Coulter, the hyperbole is there for entertainment. It helps the reader find humor in what is otherwise would make one rather angry.
You make some good points, AndyTheBear. “Ad hominem attacks by leftist, which tend to strengthen their articles (being that they got nothing else)” certainly describes Maureen Dowd, Bill Moyers and many other public leftists to a t.