If someone with $200,000 wants me specifically dead, I'm going to die, one way or another. This tech doesn't substantially change the likelihood of their success.
If they want to cause a mass casualty event, there are already much easier ways. Once we tackle some of those, we can start worrying about this.
They're out there. It will be done. Innocent (or not-so-innocent?) victims will fall. Manhunts for those that deployed a hostile drone swarm, will be mounted. In most cases, perpetrators will be found & put behind bars.
Society goes on because decent people far outnumber the nutcases.
Military uses? Terrorists? Yeah war is gruesome. Try hard(er) to avoid getting into a war.
And the Hacker News title should be changed to the slop title in the article, "It's Not The Terminator. It's worse"