And I would venture to say they are the same techniques and attitude employed by those who are already denying that Muslims perpetrated 9-11, but rather that the U.S. and/or Israel "staged" the whole thing themselves.
That 9/11 denial began with the French "journalist" who argued that no plane hit the Pentagon since in the impact site photos of the Pentagon, no object recognizable as a plane is visible.
Because, of course, a hollow tube of metal that slams into a concrete facade at 500 mph would never crumple or fragment.
This is the kind of thinking you find in a person who, stupid or not, already has their heart set on excusing or endorsing evil.