There's a maxim that when you eliminate what is impossible, whatever is left, no matter how improbable must be the case.
Given the physical impossibility of steel buildings to collapse without internal demolition the way the World Trade Center buildings did, there are few other possible explanations - no matter how implausible. I'm not saying it's hard to believe so many people could be involved, not be noticed and not talk about it. I'm saying that political challenge does not alter the laws of physics from an engineering perspective.
What would be the motive of The Deep State? I'm reminded of an episode of the TV show, House, where a billionaire took over the hospital. He told Dr. Greg House to fire one of the 3 members of the team. Instead, he cut everyone salary by 1/3 so the savings to the hospital were the same. The owner said that is unacceptable for it is not what he was told to do. It's not merely the team needs to know, Dr. Greg House needs to know he must do as he's told.
I recall at the time the duplicity of our government at the time. I've always been primarily driven by economics from a political perspective. President Bush said he thought the first plane crash was an accident, the 2nd was an attack and the 3rd was an act of war. OK, it's war then. The insurance companies have a war clause where they don't have to pay out. Except they did.
Just like Obamacare years later, where it was for legislative purposes not a tax but for judicial purposes, it was a tax; 9/11 was deemed war for political purposes but not for financial and legal purposes. Further duplicity was the "Patriot" act, which was anything but. Then "Real ID." Systematic control.
