Yeah the 9/11 investigation was a joke. Clearly they were covering up something. I am not convinced it was an inside job but just like JFK the investigation was designed to construct a believable narrative that preserved the illusion of our system. That is always the case though. If you expect justice from these institutions you do not understand incentives.

What I find more interesting about 9/11 is how it was used as the pretext to do a bunch of stuff many in power wanted to do already. You see this with Covid as well. Never let a crisis go to waste.