It really just goes to show that people are very unaware of how reliable drones really are. The term "drone" and "UAV" scare people because they are ignorant. The fact is that the AGM 114 hellfire missile is great for surgical placement to help minimize collateral damage, this is what Predators use. Compare the innocents killed by drone strikes to any other type of bombing and drones come out with a much cleaner record. That being said, how does he justify condemning these operations but not all other military action? There is no rational logic to be found, it is ignorance breeding contempt for a system he does not understand.
This is not to say he is a bad guy, just that his argument is a weak and illogical one.