Indeed. 9/11 being a case in point.
For it to have been a terrorist attack probably no more than twenty, possibly fewer, people would have known the detail prior to the event. They had to keep it secret for just a few months. Once the event happens they want the world to know.
If it goes wrong they maybe get caught, still get the publicity.
For it to have been a government/CIA/ Lizard men/Illuminati conspiracy tens, possibly hundreds, of individuals would have been involved in the planning and execution. Post event, many more people would be drawn closely into the aftermath, few who could have been identified and primed prior to it. All of whom, hundreds of people, many with no allegiance to the conspirators, would have to be prepared to keep it quiet for ever. For ever.
And if it does go wrong, the conspiracy is revealed, the political cost to the conspirators is terminal.
Occam’s Razor; in the absence of evidence to the contrary, the simplest explanation is usually correct.
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