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.