There's more than a few problems with the inside job theory itself. The huge one being how the fuck the conspiritors managed to keep it quiet and how they seem to have completely evaded scrutiny despite foreign intelligence sevices who don't dance to Uncle Sam's tune like Russia's SVR or China's MSS getting moist at the thought of lighting up CIA/DIA/NSA collusion in a plot that if proven to exist, would cripple the US establishment. The septics knew something was coming because of the murder of anti-Taliban warlord and US proxy Ahmad Shah Massoud two days before, they just didn't have a fucking scooby what it was.