> A high ratio of upvotes to comments is generally a sign of a high quality HN submission.

I think that the parent is trolling, but I don't think what you're saying is true. Low number of comments usually means that no one understands the topic, but they still want to upvote because it sounds interesting or geeky. High number of comments usually means a topic where everyone feels like they can chime in without reading the article, just reacting to the title.

We're not that sophisticated. And you have evidence of this on the front page right now. A story about AI copyright with 388 comments, versus Scott Aaronson's short rant about quantum algorithms with 12 comments.