Thanks for asking. The idea is not mine, but the idea of the founders of the site, in different words. As Hacker News says in its welcome letter to new participants, "Essentially there are two rules here: don't post or upvote crap links, and don't be rude or dumb in comment threads."[1] Submitting press releases rather than peer-reviewed publications or journalism about peer-reviewed publications violates the first rule directly and generally leads to comment threads that violate the second rule.
[1] https://news.ycombinator.com/newswelcome.html