Comment by Moodles

It becoming somewhat of an echo chamber might be an unfortunate natural phenomenon: if there’s even a slight lean to one political view, people with contrasting views will shy away from the abuse, leaving only people with the same view, which will make the problem worse and worse. Similar to how the rich get richer, big stars in the galaxy get bigger, etc. Definitely the upvoting/downvoting system and various corrupt mods make it worse.