If you are looking for evidence that proves beyond reasonable doubt that the debunking is flawed, then it reveals your own closed-mindedness. Many people like me think there is something odd (at least) about events like 911. The lack of proof does not necessarily invalidate the suspicion. I mean it's like saying 'if God exists, then prove it to me'. It's just immature and a sign of a badly functioning critical thinking ability.
You then cite 'Flat earthers' which is a cheap grab of an extreme example and text book confirmation bias. And the debunking site you provided is a very light read and lacks sufficient information to even be considered serious. I mean it's like watching the six o-clock news, it's just patronising.
