Our existing systems already generate echo chambers (due to the emergent properties of algorithms and/or the choices people make when they consume media), and t

Our existing systems already generate echo chambers (due to the emergent properties of algorithms and/or the choices people make when they consume media), and that's in the best case where your horizons aren't just set by the political leanings of the employees of the companies that run the systems that provide most of the content. As long as people could choose different communities that had moderation policies which suited their members, it would allow those who wanted to hear other perspectives to do so, and might make people aware of what sort of echo chamber they are in.