To the contrary, seems he built an anechoic chamber. The only signals he perceives is what he wants, cleanly. He has decided what he doesn't want, knows that most signals out there are just variants on the same such content, and blocks it all.
I'm approaching half a century old. Comes a point where you realize you have heard it all, and are not interested in anything "new" because it isn't. I'm this -><- close to shutting it all off and going seriously minimalistic. The tipping point would be a news service which presents only actual need-to-know news, and a stream of new music.
Address, enumerate, and centralize your core axioms. Build from there. Stop letting others dump $#!^ in your head.
The purpose of the anechoic chamber is not to keep out sounds from the outside, but to allow you to differentiate the direct sound you're making from the environmental reflections.
Since it is impossible not to live in some variant of "chamber", always has been, and always will be, this is an accusation without teeth. Which is probably a good thing, since it's also hypocritical, but fortunately, it can't bite you back; it's toothless.
The interesting question is whether you have built a good or a bad one, and what exactly "good" and "bad" even mean in this context. But there is no "not in a chamber" option.
The problem is, it's becoming necessary to live in some kind of chamber in order to stay sane. Staring into the infinite void of indiscernible and contradictory truth forever is more than the brain can handle. More than mine anyway.
The challenge is to maintain the right mix of echoes in your chamber.
It's the nature of information at this point in history that you cannot possibly consume it all[1]. Therefore, you have to have some selection criteria, which will obviously be biased. If you want to call that an "echo chamber", well I don't know what to say to that.
