It's driven by the top x% of the users, though, who I'd guess are not that many (maybe 1%?). This makes me think that HN managed to select a healthy moderator c

It's driven by the top x% of the users, though, who I'd guess are not that many (maybe 1%?). This makes me think that HN managed to select a healthy moderator community, but I doubt that the downvote feature was the main driver for that.