Depends on your view.
There is / was good footage and questions to be answered in the aftermath of the situation, not what happened but what happened AFTER. (CCTV of the "plane" that hit the pentagon showing it was the size of a car, lack of plane wreckage, perfect shaped hole on the interior wall of the pentagon, film during an interview showing a building still up that held Govt records that then "fell down" etc)
And as per normal US mentality, rather than dismiss these things with fact (all CCTV footage was grabbed and disappeared) they let it spiral.
No smoke without fire but a lot of smoking people involved around the Pentagon at least, and they all carry matches. Fahrenheit 911 is worth a watch.