Nuclear reactors use control rods to manage the amount of fission taking place inside. Cadmium rods eat up neutrons, so pushing a long rod all the way through the heart of a reactor greatly reduces the number of reactions taking place. As long as you can control those rods and pull them out, or push them into the reactor, you are in control.
Hosted Control Planes allows us to shove dozens, hundreds or even potentially thousands of smaller control rods into the reactor.
Fortunately, no one will be hurt if your Kubernetes cluster melts down, and even more, fortunately, using Hosted Control Planes will help prevent that from happening in the first place.