Tell HN: Feedback – don't let new accounts post in flamebait threads

There's 2 or 3 big-tech threads on the front page right now that have devolved into flamewars. While these are normally quickly deleted, they appear to have been manually modded up (which I suppose would avoid a claim about HN censoring the articles about censoring). So that's fine. But it's tedious reading through a bunch of low-effort posts by throwaway accounts. Can we at least prevent those?