That border is determined not as much by ground truth, as by people's sentiment. As such, many famous artists and creatives never succeed navigating - their contemporaries would call them crazy, and then decades or centuries later, the border shifts, and suddenly they're remembered as greatest creators of their era.
Until an AI can have desires or experience life it cannot tell a story.
Even if it could it is questionable if such alien experience qualifies as story.
It can retell stories. It can swirl around extant media like a child playing with its dinner. It cannot blend in its own lived and new perspectives which is what gives new art value.
It's interesting to compare your opinion with Andrew Wiles quote:
> Perhaps I could best describe my experience of doing mathematics in terms of entering a dark mansion. You go into the first room and it's dark, completely dark. You stumble around, bumping into the furniture. Gradually, you learn where each piece of furniture is. And finally, after six months or so, you find the light switch and turn it on. Suddenly, it's all illuminated and you can see exactly where you were. Then you enter the next dark room...
It is infantilizing to suggest this is originality or creativity just as much as it is to suggest David copperfield is a scientist.
It is an illusion. A subterfuge being performed by the puppeteer. It works due to the theft of human’s work.
Ask yourself, "What are this creative engine's sensory inputs to experience life?"
"What can this creative engine tell me about the experience of life from its own direct inputs?"
"How does it blend/shape or re-interpret raw input direct sensory data with the, admittedly, astounding body of knowledge it has about creative work?"
"What form of change or growth has this engine experienced that teaches us about ourselves?"
If you take those questions seriously you will come to the same conclusion. It is a Roomba smearing the valuable creative work of millions like dog shit across the living room floor, not a consciousness experiencing the agony and ecstacy of life.
If you think I am wrong ask an AI. It won't come up with an original answer, but it can certainly tell you whether the collective body of slightly-outdated human knowledge thinks I am correct.
It is like a decompression program that results in a slightly different result each time it is run on the same compressed data. If you are lucky, the delta could end up with answers to all your questions..