> Lakes turn into swamps which turn into forests given enough time.

While this is literally true, it's not clear to me that it's a relevant metaphor for online communities.

On second thought I agree.

Perhaps, but do nothing is the only sane response. Mind you, I mean on a basic level. On top of that you can evaluate options, for example, "channels", if you are a democrat/liberal/SJW you can subscribe to channels of only approved sources if you dont want to read libertarian/russian/GOP ones. You can argue that this will promote an echo chamber, but lets be honest it is what happens already. So I dont want censorship on top of that.