For one, posts are often upvoted based on their title/subject, and only afterwards are read and evaluated for their content.
1. See hn link.
2. Go directly to comments.
3. Top comment is seen as counter argument to the article.
4. Discuss on premise defined by top comment (not article).
Unless there’s a way to safe for sure (ex HN weighs in with analytic data) it’s all speculation.
For one, posts are often upvoted based on their title/subject, and only afterwards are read and evaluated for their content.