Insomuch as that's true, the individual agent is not the real artifact, the artifact is the model. The agent us just an instance of the model, with minor adjustments. Turning off an agent is more like tearing up a print of an artwork, not the original piece.

And still, this whole discussion is framed in the context of this model going off the rails, breaking rules, and harassing people. Even if we try it as a human, a human doing the same is still responsible for its actions and would be appropriately punished or banned.

But we shouldn't be naive here either, these things are not human. They are bots, developed and run by humans. Even if they are autonomously acting, some human set it running and is paying the bill. That human is responsible, and should be held accountable, just as any human would be accountable if they hacked together a self driving car in their garage that then drives into a house. The argument that "the machine did it, not me" only goes so far when you're the one who built the machine and let it loose on the road.