They are autonomous when they cruise around or on their way to the target area. It will always be humans-the military commanders and drone operators-who take over when targets appear and orders to kill are given.

It will still be a human being that pushed the missile launch button.

Besides, the article is about drones in civilian settings. Asimov's Law is still not a viable rule since most of these drones are just taking videos or package deliveries. Asimov Law's was something for the autonomous robots to follow themselves so it won't affect some terrorists using remotely controlled drones to bomb buildings.

Plus, I don't think the military wants Asimov's Law to be imposed on their drones that are specifically designed to kill people.