[Paracompact]

It's very clear to me on its face that it's AI, but not "obvious as the sky is blue" others seem to be implying. I would dislike the writing style even if it weren't AI.

For the record, an AI detector that appears to have put work into reliability and that I trust very much from my own testing, Pangram (https://www.pangram.com), says this is 100% AI generated. I've used it plenty before when experimenting with AI-collab writing, both fiction and non-fiction, and it's frustratingly accurate in identifying what is and isn't my contribution. I have since largely given up trying to do AI-collab writing, because no matter how nice the writing looks in the moment, it always reeks when read closely, or on later days.

[Miraltar]

Your detector did not work well on an AI-collab writing fiction project I did a while ago, tagged it as 100% human even with high confidence for the most part. But to be fair, most detectors weren't significantly better, although this one gave a justification that made sense https://aidetector.com/