IMO current generation models are capable of creating significantly better than "slop" quality content. You need only look at NotebookLM output. As models continue to improve, this will only get better. Look at the rate of improvement of video generation models in the last 12-24 months. It's obvious to me we're rapidly approaching acceptable or even excellent quality on-demand generated content.
NotebookLM is still slop. I recommend feeding it your resume and any other online information about you. It's kind of fun to hear the hosts butter you up, but since you know the subject well you will quickly notice that it is not faithful to the source material. It's just plausibly misleading.
This is exactly while I'm building my app now with the expectation that these assets will be exponentially better in the short term.
I feel like you're conflating quality with fidelity. Video generation models have better fidelity than they did a year ago, but they are no closer to producing any kind of compelling content without a human directing them, and the latter is what you would actually need to make the "infinite entertainment machine" happen.
The fidelity of a video generation model is comparable to an LLMs ability to nail spelling and grammar - it's a start, but there's more to being an author than that.