I think the point people are making is that when the text has an "AI smell" (it does), we immediately lose trust in the veracity of any claim being made and feel like continuing to read what is possibly a hallucinated fiction is a complete waste of time.

At this point we're all used to skimming through thousands of AI-generated sentences every working day and constantly thinking "this is likely to be 20% bullshit", it's hard to turn that off even if I try.