So Coulter is not only attacking liberals these days, but Republicans, war heroes, single mothers, divorcées and their children as well. At some point there is going to be nobody left to buy her books --- except for media figures, who apparently continue to believe that she's just rollicking good fun. But then they love nothing more than kissing up to those who abuse them.
The establishment media also sees Coulter as part novelty, part comedy act. In the media world of false equivalency, they see her as the far-right balance to Michael Moore or Bill Maher. Of course serious fact-checkers and serious satirists/comedians would have serious issues with those comparisons, but facts and reality never stopped the television news people.