Shades of grey fallacy. You have way more context clues about the information on the internet than you do with an LLM. In fact, with an LLM you have zero(-ish?).

I can peruse your previous posts to see how truthful you are, I can tell if your post has been down/upvoted, I can read responses to your post to see if you've been called out on anything, etc.

This applies tenfold in real life where over time you get to build comprehensive mental models of other people.