I've been in the camp that WTC1, 2, and 7 were a controlled demolition for a very long time. The totality of the collapse at free fall speed is unexplainable to me by any other cause. A progressive collapse would meet significant resistance to the core structures below it, slowing its speed, partially toppling over, and not ejecting enormous amounts of pulverized dust in its wake as it progresses downward. The pancaking collapse theory is completely untenable to me. Molten spheres of iron are found in abundance in the dust, there's video footage of molten iron streaming out of the building moments before collapse, all of this completely unexplained by jet fuel fires, not to mention numerous "squibs" located during the collapse. And WTC7 takes an otherwise head scratching situation for WTC 1 and 2 over the fence to "this is completely suspect" territory.
I don't really care for the emotional arguments that delve into how "logistically crazy" something like this would (or wouldn't) have to be. It's irrelevant to answering the specific question of what happened physically to the buildings. But I do not believe that the number of people involved would need to be that many that were true knowing participants. Military operations are extremely compartmentalized, and during that day there were numerous "drills" going on adding to the confusion.
Occam's razor is often used, but this should be applied to the physical situation itself - what is the most likely cause of WTC7? It would be the first building in history not hit by a plane, with some fairly benign fires, to completely collapse on its own footprint for no reason whatsoever. Buildings don't just do that. They are designed extremely conservatively to handle significant fire damage.
As with any forensic crime, once you know that it has occurred, you reconstruct the physical possibility of how it occurred, and then also follow up on the money trail and motive. Larry Silverstein must have been the most fortunate man in the world to not only buy the WTC complex in the months leading up to 9/11, but also take out an extremely large insurance policy covering terrorism. How many insurance claims have been proven to be fraudulent in a similar manner when murder is actually involved? The wake of 9/11 caused unprecedented government expansion through the creation of the Homeland Security departments, wars in both Afghanistan and Iraq, and a police state surveillance program.
The PNAC group even stated in the years prior to 9/11 that they would need a "New Pearl Harbor" to catalyze these objectives. Again, they must be the most fortunate think tank in the world to have that land on their lap if extreme expansion of government power is their primary goal. They got it.
And twenty years later we have COVID which has accomplished similar objectives. Even if you don't believe that this was an inside job, I don't see how anyone could be called crazy for suggesting the possibility given the number of glaring issues with what physically transpired that day.