I think people misunderstand what an echo chamber is. Just because we aren't divided into one of two tribes engaged in endless pointless bickering, doesn't make us an echo chamber.

There are people here with very different perspectives and experiences than I have. I learn from what they say, because they say it thoughtfully and I think most of us are trying to understand each other.

By contrast, an echo chamber is where everyone already thinks the same things about all of the topics that arise for "discussion".