Did Jon Stewart Hurt America?

Drezner provokes:

We're coming up on the five-year anniversary of Jon Stewart's verbal skewering of Crossfire in particular and the whole genre of left-right cable gabfests in general.  Stewart said these kind of shows were "hurting America" because of their general blather and failure to ask politicians good, sharp questions. 

Stewart's appearance on Crossfire generated quite the navel-gazing among the commentariat, and played no small role in the eventual disappearance of Crossfire, The Capitol Gang, Hannity & Colmes, and shows of that ilk.  

So, five years later, I have a half-assed blog question to ask -- did Jon Stewart hurt America by driving these shows off the air? 

If you're expecting a lengthy defense of the Crossfire format right now, well, you're going to be disappointed. My point rather, is to question what replaced these kinds of shows on the cable newsverse. Instead of Hannity & Colmes, you now have.... Hannity. Is this really an improvement?

He's got a point, hasn't he?