Most likely imo is the perpetrators were involved in some other capacity with the natsec state hence why they were able to slip through so many cracks. Double agents essentially. The taliban and the us go way back so it's not beyond the realm of possibility that the CIA was telling other branches to look the other way on these guys for some unrelated reason. And the attackers used that to their advantage.
The whole thing was basically blowback for covertly backing the overthrow of the socialist gov of Afghanistan back in the 70s and pouring arms into the region to fight a proxy war against the Soviets through the mujahideen (eerily similar to Ukraine actually). It makes sense that the guys slipping through were just another extension of that.
Even if bush did 9/11 which he didnt killing 3000 people isnt even close to his most demonic act, which would be using that attack as justification for launching an unprovoked attack on uninvolved Iraq. Millions of deaths on his hands. Piece of garbage deserves piss bags thrown at him everywhere he goes but instead he gets feted by liberals bc he hands out Werther's just like meemaw used to do.
All the controlled demo stuff is crackpot shit.
Blowback season 4 is probably the single best piece of media you can consume about 9/11 albeit indirectly