"When AI Writes the Code, Who Proves It Works?" <- AI itself? Lol. Of course, not.
Using AI to check AI is unavoidable. What us humans ought to do is *never* to give too much autonomy to AI. When we do so, we give up true intelligence that our work, lives and mankind depend on. Even when we mess up big time, as people, we are accountable for the mistakes that we carried out from our hands. Call it laziness, call it worship of an inferior product to man, perishing or getting important things destroyed because we handed off the autonomy to AI is a very sad thing.
Treat AI like fire. You want to know how to wield fire for your needs, and not ask the fire to decide for us where it should go and stay to help us stay warm..