> If you want somebody else to care about a thing, you have to care about it, too.
This has always been the crux of it for me, you're right to focus on intent and human to human communication.
Does this imply that we must redefine our ground rules for what constitutes art? Yes, I think it does. The exact same image, one hand-drawn, and one generated, could be art on the one hand, and merely an arrangement of colour on the other. Even if a person interprets meaning from the generated image, I still might argue that it does not qualify as art. I have interpreted meaning from hallucinated shadows on my wall, clearly not art.
This makes it rather impossible to declare something art merely based on the artifact. Art may become a concept that is only stable within a tight-knit community of trust.