Lots of motives, ranging from well-meaning editors trying to use it to help them improve, all the way to government propaganda machines trying to control narratives.

My personal pet theory is LLM companies themselves trying to poison the well of public information, so that you're forced to use AI instead of traditional search/sites.

My behavior has already started shifting towards asking AI because I know google results are already flooded with AI nonsense, so I might as well use the latest model and ask it directly. But the last thing we need is our access to information tied up in an AI blackbox