I disagree. The problem is the loudest groups of people are people with the strongest political opinions. Regular people are busy. They have neither the time

I disagree. The problem is the loudest groups of people are people with the strongest political opinions. Regular people are busy. They have neither the time nor desire to police internet arguments or play the counter argument game. And even if someone does, regular people don't have time or desire to wade through it. One thing that I noticed when I had a Facebook account was that apart from a few exceptions most what I would consider well-adjusted people rarely participated in political discussions. Sure, people on average might be apolitical but there is no shortage of political content on Facebook -- it just predominantly seems to be driven by people using pseudonyms or with much less stake in their social identity. Another issue is that both politcal parties in the US seem to believe that they can achieve their goals by shifting the Overton window and they are incentivized to polarize people and hijack online platforms to do this. This leads to a huge black-hole of representation for any sort of average political view online which cannot be countered with the above logic.