The fact is that 911 responders are the ones who have been used to prey on peoples emotions, and this outlines the hypocrisy Jon Stewart brings attention to.
In my opinion, the use of 911 responder rhetoric was a very useful and exploited card to play, in terms of motivating support for a war in Afghanistan and Iraq, as well as a motivational tool to recruit people into the military.
The brave sacrificial heros as role models for the American public was valuable to the administrations agendas. The add reads, something like, the attack was a call to action, and those who volunteered are heros, and so can you be, if you join military and fight selflessly for your country as those did on 911.
Had they warned people of the health consequences, and people had evacuated the area until the dust settled, and carefully worked using appropriate gear, and had schools near ground zero shutdown, and had people near the area stop work, then the message which was so central to the advocacy of their agenda wouldn't have been the same.
All of this is only more and more of a reason that the very same people who have been exploiting this, (the emotional weapon of 911 first responders, defiance, bravery, and patriotism) seam to be the people you would expect to support the bill. They have instead proven that their agendas, conflicts of interest, and support for foreign corporations trumps their support for the American Hero, and American people. Of coarse, if you hadn't had your head in the sand your whole life, then this was probably already obvious to you.