I've kind of wondered if flattening the world isn't the root problem with social media. There are very few people I encounter IRL that I disagree too much with. We do disagree, but everyone kind of understands each other to some degree. In contrast, my values and the values of someone in Germany (as an example), might be less aligned. We frame so much of this as either echo chambers (we work in the set of people who agree) or ML targeted rage bait. Maybe the best algorithm is Californians mostly engaging with Californians with a spectrum of viewpoints that naturally exists from the urban rural divide.