It's not important at all and I wish people would stop mentioning AI. If you have criticisms on the docs or code, by all means make them but they shouldn't concern "AI vs human" considerations. Humans have written plenty of bad and documentations, too, it really doesn't matter who wrote what to what extent, what matters is whether it's the right quality.
Since we cannot address criticism on the docs or code to the author, we have to address our criticism to the middleman and what he did.
The GP writes "me and many others think ...". I find that many of the complaints about the way LLMs write come from people who are illiterate and haven't been exposed to much literate writing before.
No. It’s dishonest, not in any way different from plagiarizing another human’s text or code without proper attribution.
Obviously LLM-generated text generally doesn’t have the right quality. People aren’t just annoyed by it being LLM-generated, they are annoyed because the writing is bad in a soulless way.