Let’s say you adopt a puppy, and you don’t discipline it and you let it act aggressively. It grows up to be a big, angry dog. You’re so careless, in fact, that your puppy becomes the leader of a band of local strays. You still feed the puppy, make sure the puppy is up to date on its vaccinations, care for it in every single way. When the puppy and his pals maul a child, it’s you who ought to be responsible. No, you didn’t ask for it to do that. Maybe you would’ve even stopped it if you saw it happening. But if you’re the one sustaining another being - whether that be a computer program or a dog - you’re responsible for its actions.
A natural counter to this would be, “well, at some point AI will develop far more agency than a dog, and it will be too intelligent and powerful for its human operator to control.” And to that I say: tough luck. Stop paying for it, shut off the hardware it runs on, take every possible step to mitigate it. If you’re unwilling to do that, then you are still responsible.
Perhaps another analogy would be to a pilot crashing a plane. Very few crashes are PURE pilot error, something is usually wrong with the instruments or the equipment. We decide what is and is not pilot error based on whether the pilot did the right things to avert a crash. It’s not that the pilot is the direct cause of the crash - ultimately, gravity does that - in the same way that the human operator is not the direct cause of the harm caused by its AI. But even if AI becomes so powerful that it is akin to a force of nature like gravity, its human operators should be treated like pilots. We should not demand the impossible, but we must demand every effort to avoid harm.