I can indeed use AI to do research on topics I learn about on HN. That’s a different activity than what I come to HN for, or when I’m reviewing a proposal for something at work, or if I’m interested in an article and want to learn more about some of the details that didn’t make the final draft from either the author or from other people with experience in the area.

“Why didn’t the author consider [this thing that seems similar]” is almost never something you can ask an llm, especially for articles where the author is putting in so little of their own effort that they don’t edit out obvious AI tells.