I think writing fiction with LLMs is fine. "based on a true story" or roman à clef fiction is also fine. I would have no objection to this if it were clearer that this was a "movie treatment". (As LLM fiction goes, this isn't even all that bad.)

However... Look at this HN page! Not a single person here realized (before my still-downvoted comment) that this was a 'movie treatment', or that the 'quotes...were also mostly spat out by the LLM as well'. They all are taking it as 100% gospel, and engaging with it in good faith, as if it were genuinely a 'technical post-mortem' (as it takes pains to present itself) instead of your fiction-writing hobby,

Just make it clearer that this is a fictional story.

> I'm curious if you consider having a ghost writer to be lying, or a cinematic re-enactment

Yes. This is why ghost writers are supposed to be credited as such if they are contributing non-trivial content rather than simply serving as a amanuensis or an editor, and cinematic re-enactments are flagged as such if it wouldn't be obvious to a reasonable person (by reputable documentarians, anyway).