If you don't think it's interesting you are free to skip it after they said it was a chatGPT answer. I don't really like you deciding for everyone on hackernews what "should" be posted.
This is a "comments" section. ChatGPT didn't crawl here, click "reply" and post its comment. Forwarding other people's/AI's words is not a `comment` and violates the spirit of what a comments section is.
I agree with you if the comment was a straight up copy and paste of what chatGPT said. But it wasn't. The comment provided context and explained why it has value. Just because something is generated by chatGPT doesn't mean it cannot contribute to a discussion.