We can always just unplug the computer, you know. AI agents can do damage, they can be used in malicious ways and bring down/distrupt infrastructure, but the leap from today to the point where LLM's can prevent us from pulling the cord is unimagineable large, and likely infinite.

In modernity, the gap between the digital and material world is closing, especially from a sociological perspective, but we are still neurological systems spinning on a large rock. For 99% of our history we didn't have electricity. The likelyhood of returning to a post-electricty world, for example, is much greater than LLM's taking over the world and making us into zoo animals.