People are focused on who needs to watermark their AI content when the real problem is that we haven't learned how to validate claims on the internet. AI or not.
Treating an AI agent like a person stops you checking its work, and that would still be a problem even if these systems turn out to have an inner life - which I get at by way of our vacuum robot, a colleague's AI intern, and an engineer who says you should never test your agents.
A small toolkit of habits for using AI honestly - tagging what it touched, owning what you ship, and setting the tool up to poke holes in your thinking instead of flattering it.