> why is the regular voting system not enough

Voting systems can be gamed and as HN becomes bigger and bigger it'll start to attract unsavory audiences who have an agenda.

Setting aside that this is subjective, I think it’s safe to say that from the POV of most of this site’s target audiences, that “start” happened a long time ago. PG’s essay on submarine articles didn’t come out of nowhere, and he hasn’t been active here in…a decade? Ish?