Regardless of the logic or efficacy of what came next, the 9/11 attacks were not a US government conspiracy.
While I would agree with you that many of the theories floating around have very little merit and are highly unlikely (no aircrafts at all, outer space lasers, etc) I think the above statement you made is far too broad and remains unsubstantiated. As per the Northwoods Documents referenced above, we know that the government has planned these same types of acts in the past.
We also know that the act of three high-rise/skyscraper-type buildings imploding into their own footprints more or less due to fire is historically unprecedented. We further know that numerous witnesses report hearing primary, secondary, and tertiary explosions. The NIST report and the 911 Commission Report are full of strange logical leaps.
Whatever one's personal views, it certainly has not been satisfactorily established that the United States was not complicit in these attacks, or that the buildings collapsing were simply the result of structural damage cause by airplanes.
I've read a bit of Popular Mechanics' take on the issue, and as expected of any good government backed publication, they attempt to shame anyone asking questions.
All I claimed in this piece was:
No video has been released clearly showing a commercial airliner crashing into the Pentagon on September 11th, 2001.
That is 100% factual. One of the most highly surveilled and guarded buildings in the world is smashed by a BOEING 747 and not a shred of video is released from any of the surrounding cameras showing it clearly. On top of that, Stubblebine claims that all but one of the Pentagon's sensors were turned off.
Either way, again, my claim in this article is simple:
No video has been released clearly showing a commercial airliner crashing into the Pentagon on September 11th, 2001.
This is 100% true. I did not extrapolate from there.