3000 killed and $1T property damage/rescue expenses in a day doesn’t need to be matched by drones to make an impact. A single, Luigi style, untraceable, car or house impact, would make the oligarchy apoplectic. Though car bombs and hand grenades/molotovs have existed for a long time.

Not sure why you are comparing 9/11, a terrorist attack that targeted innocent civillians, to the shooting of one evil CEO which is a surgical strike that have resulted in zero innocents dead.