One example can be that there is a mass attempt at pushing some viewpoint, it may not stick long term but it sticks for the duration of time the content is viewed by the most amount of people. Kind of like how upvote bots mess with Reddit.
But community notes works well. That's evidence that reasonableness emerges when you boost content that a diversity of people appreciate, regardless of whether people are sound and reasonable.
> What you describe is a flamewar maintenance algorithm.
Are you saying my idea will increase flamewars? I believe it should decrease flamewars, and that's why I want to see it implemented. Again I point to community notes. If a diversity of people like content, it's probably level-headed, and that's why community notes works so well.
Echo chambers aren't intrinsically bad, only when it's about politics and social issues - i. e. stuff that will affect everyone in the end.