How does your heuristic handle your qualitative and quantitative words here? If you land on a blog post with a single, pertinent illustration (from a LLM), do you assume the post, site and author are all robot trash and run away? Investigate the other posts before reading further?
The point of my caps, above was that I'm writing for me. If I think my post is improved by me prompting a LLM for an illustration, that's up to me. I'm not writing for your heuristic, I'm trying to express myself every way I can. The time where you find individuals untainted or unaided by these tools is over.
I'd try to just content by it's content rather than it's illustrations.