None of that has ever been apparent with the supposed perps and continues to be undiscovered. Thus Bill cooper drawing attention to obvious flaws right after the event could cause real problems. He did not have the sense to shut up for a while.
All three buildings collapsed in a controlled symmetric implosion that needed to be engineered properly. A large part of the structural steel was vaporized as well suggesting a massive heat burst. I suspect that the plane lost over Pennsylvania was intended to hammer the third building. This scheme was way too complicated and likely accommodated additional objectives..
Bill Cooper was aware something was cooking. Hell so was I. Intuition does work and the markets will give you flags. However no imagination would construct the scope of what was intended. Thus he was as surprised as anyone and did not understand how serious this was either and now dangerous it could be to him.