Simon Shack is, pure and simple, an uneducated idiot.
Anyone with any knowledge of fire fighter SOP could probably tell from his captions on the footage of the crew checking for the gas leak that he is uninformed. He seems to think that it is unusual that the street would be blocked while fire fighters are wandering around the traffic lanes putting gas detectors through the gratings. Maybe he is just too stupid to realize that you do not let a possible source of ignition, like a hot catalytic converter enter an area with a potentially explosive atmosphere.
Shack starts on stupid and does not move much from that point.
His comments that the aircraft appears transparent shows that he has no idea what the concept of "focus" is all about.
Ever with auto-focus, a ca,era will not clearly record an object beyond where it is aimed and focused. Auto-focus would adjust to the nearest building in line of sight. That was not the tower or the aircraft.
Now, if the dimbulb had looked at all that footage, he would realize that the smoke from the fireball cast a shadow on the facade of the building, and that its angle was pretty nearly the same as the dark "penciled-in" mark that he calls a "photo-shopped gash." It was a shadow. It isn't there in later frames, and it is out-of-line with the actual wing prints.
Anyone who considers any of Shack's blather "evidence" needs to take a course in drawing and to go talk to a fire fighter about how they manage traffic in the vicinity of a gas leak.
Somewhere, there is a short yellow bus short a passenger.