“Echo chamber” is just an overused term meant to make the idea of community sound derogatory. People who use that term are typically close minded and trying to silence opinions they disagree with.
Discussion
I’ve always thought of Reddit subs as echo chambers. Opposing opinions are quickly downvotes and swarmed. I don’t even bother going there. Every time I pop in just to check it’s all the same hivemind lazy thinking.
I just consider that to be a community convinced of what they choose to believe. Maybe they’re close minded, or maybe they’re just extremely zealous about their views and don’t believe they need to rehash those things again for themselves. Doesn’t make them right, per se, and it also doesn’t mean I need to join them or believe them. But they have a right to congregate and believe those things together. The term echo chamber is too often used to demonize people who choose the safety of associating with other people who hold similar views and values.
Never did do much with reddit. Perhaps I didn't miss a thing.
I think Bitcoiners are one of the few communities who can argue the opposing views of Bitcoin better than those making the arguments because they’ve put in the required work vs shutting down the ideas. Bitcoin is a very open-minded community.