I'm not sure the rss comparison really works. The link discovery and discussion are one and the same because they are being driven by the same community. Significant reaction and discussion of one post leads to more posts extending that premise, and then more discussion, and so on.
I don't think replacing Reddit is just about throwing a toolbox at the problem
> from article.view
Broken example due to typo.
I'm being facetious but it's actually easy to find them because their are typo PRs open in their GitHub.
Hopefully demonstrates the point though: the law holds.