HN moderation is design in a way that forces very slow growth, which controls the content of new posters/posts. You can't get to an X-million posting community

HN moderation is design in a way that forces very slow growth, which controls the content of new posters/posts. You can't get to an X-million posting community with that style. FWIW, Slashdot comments sit between HN and Reddit. Also, HN intentionally avoids most controversial kinds of top-level post content that Reddit explicitly encourages in subreddits.