It doesn't matter.

The guidelines are perfectly clear, no matter the outcome of your thought experiment. Hacker News wants intelligent conversation between human beings, and that's the beginning and the end of it.

If you want LLM-enhanced conversation then I'm sure you will find places to have that desire met, and then some. Hacker News is not that place, and I pray that it will never become that place. In short, and in answer to "Do we prefer text with the right "provenance" over higher quality text?".

Yes. Yes, we do.