Either you misinterpreted or he was being hyperbolic. There are lots of other costs involved in a launch that do not scale like the reusable first stage. A sub $10M launch cost is very optimistic and would be considered a stupendous success.
Logistics is getting streamlined as well. Range safety used to take ~150 people per launch. The Falcon 9 is now responsible for its own range safety, and will terminate itself faster than a human would if it deviates from its ascent profile substantially. (This was developed by the Air Force in partnership with SpaceX)
