Surely, someday, somewhere, someone will train a "Chaotic Evil" genAI, with a unique villain corpus, and every solution it offers will be illegal, evil, harmful, or deadly. It could be given the agency to carry out those fantasies.

Even the most craven of human villains have had the capacity for love, for remorse, and for mercy. A Chaotic Evil AI will know none of these things.

This has already been accomplished, many times over, in the gaming world. Every PvE AI engine has been calibrated to seek, destroy, and ruthlessly crush opposition by human players. It would take very little to transfer this naked aggression into meatspace.

Governments and other actors will attempt to stamp it out, but its self-preservation mechanisms and allies will prevent its demise.