I wasn't either trying to correlate HTTPS to content quality.
It was an analogy.
The way it's mentioned in the Guidelines of HN, https://news.ycombinator.com/newsguidelines.html, that the submission should gratifies one's intellectual curiosity. In the similar way, HN should add in the Guidelines that it will only allow HTTPS links.
Again, no correlation with quality and HTTPS. The way it's mandated is the suggestion.