It can be quite disturbing watching "your people" ostracise you because you're not in-group enough.
And even if you are in-group enough, you start to suspect the "leaders" aren't actually in-group. They just constantly seek the latest trend in order to be appear setting. So you're being used/fooled.
Once you have friends for reasons other than echo-chamber, you learn their differing opinions. And you're glad you knew them because you had hobbies or whatever in common. And then you look distainfully at people you only joined because you all agree about X.
That's been my experience, anyway...