I agree with the indirect argument that staging of 9/11 as a media event makes perfect sense. However, I think another indirect argument closes out this, too.

9/11 forced a shift of focus on the admin.

I do remember clearly what the neocons' obsessions were prior to 9/11: Great Powers struggle with China and Russia, chiefly via missile defense, and using 'rogue states' as cover. This was all the talk back in summer 2001. Terrorism was off the agenda. They were forced to ditch their line by 9/11, and had to smuggle it back through the back door, they even felt the need to practise cooperation especially with Russia.

_{*Lunatic*, n.
One whose delusions are out of fashion.}