That WAS NEVER actually PROVEN.
In its totality - the evidence indicts Dick Cheney, and his PNAC & JINSA, NeoCon, Imperialist buddies. It's true that there was outside help in the Covert Operations, from the Israeli Government, primarily in the NY City elements of the Operation. Blaming the Zionist-Apartheid Entity, is putting the cart in front of the horse.
There's no way to deliberately foil US/NORAD Air Defenses, from a Cave in Afghanistan. You can only do that from within the US Government.
See ae911.org , or the substack of Richard Gage, their founder and former head. WTC7 is undeniable smoking-gun-type evidence...which is why the Cheney/W. Regime's Coverup Commission didn't even mention it. Since then NIST has issued a FRAUDULENT Report, that's easily debunked, by almost anyone - experts have 'demolished' it. https://www.ae911truth.org/wtc7