What limited productive use they have seems to be constrained to software development. Any kind of deep insight is classified as a hallucination and removed. It's becoming clearer and clearer that these products are a stopgap only; billions of dollars to make sure nothing changes. Yet it will happily spit out obviously fake sources, a different definition of "hallucinations," in the domains of science and law. These are information weapons against small businesses and individual autonomy.
I don't think it's any accident that Character.ai is targeted at children.