Jocko, my friend, all too unnecessarily complicated. The inventory of those model planes is kept by the manufacturer and planes disappearing one place and then mysterious planes appearing somewhere else in inventory would stand out like a red alert light flashing for any one to find. It just doesn't happen. You want to talk about "traceable," there are numerous parts and equipment on those planes that are traceable and trackable. Just fly the planes into the buildings.
What these conspiracy sites require is that all those millions of eye witnesses in NY and NJ did not see what they saw, and hundreds if not thousands, of co-conspirators who were complicit in the commission of the crime and coverup from the air-traffic controllers, to the airport personnel, to the people who sifted the wreckage sites and found aircraft pieces.
Could it have been a false flag? Yes. Did it require a complex internal conspiracy involving hundreds or thousands to accomplish it? No. Apply that gentleman of Occam's beard cutting tool. Keep it simple.
I understand your reasonable points. I guess I don’t have anything else to offer you. imho, Ocham’s razor is on my side of the interpretations. LOL.