The current system is fine for controlling new accounts that just show up to spew invective. They're quickly downvoted and/or flagged, even banned when they go

The current system is fine for controlling new accounts that just show up to spew invective. They're quickly downvoted and/or flagged, even banned when they go too far. Multiple times I have seen article authors or project creators register a new HN account to specifically comment about work of theirs that has reached the front page of HN. They may write a dozen posts on their first day here, all of them useful.