Social media algorithms identify our politics and then shepherd us into a hermetically sealed bubble, framing our worldview through a window of rage and extremism.
"Unlike the open source movement or Wikipedia, participants of social networks do not seem to follow a common noble goal, or celebrate a community spirit. The focus here lies on the individual." (Dennis Knopf)
We can always opt out of this arrangement, of course, and live happily in meatspace, but that is precisely the point: Offline we exist by default; online we have to post our way into selfhood.