I think we need to critically evaluate what we call echo chambers. The continent, country, state, city, street you live in all exhibit patterns of echo chambers. In a sense, our planet itself is an echo chamber. Every human network is an echo chamber that boosts signals to varying degrees. A lot of times, this is a good thing! Like when people come together to help each other. The real problem is when the network itself is designed to boost certain signals (e.g. outrage, controversy) over others to a point where our society breaks down. Many of today's centralized networks profit greatly from misinformation, anger, and other negative signals. IMO that is the problem we need to tackle.
Which has a single front page which shows the same headlines to everyone where people who disagree can all see each others posts and we can disagree with each other so long as we can avoid being jerks to one another.
At worst you lose imaginary internet points if you say something that the group doesn't agree with.
It is something of a collective filter bubble, and there is a pervasive criticism from those who largely don't participate here of typically HN behaviours. I agree with a fair bit of that. There are certainly topics HN doesn't seem to be able to reasonably discuss. (This seems to be a frustration of the mods as well. They're certainly aware of the issue.)
My own (in my view at least) largely contrarian voice seems to have been reasonably well tolerated here, though.
