The incredibly dangerous outcome of all this is precisely what foolish commentators are suggesting: alternatives will be built, that themselves will become echo

The incredibly dangerous outcome of all this is precisely what foolish commentators are suggesting: alternatives will be built, that themselves will become echo chambers. If you disagree with certain ideas, you have to fight it in the open. That's how we get a big tent with general consensus across key issues, and avoid parallel universes of polar opposite information. The end result of all this is just going to be a truly Balkanised / multipolar world, but instead of geographical boundaries, it's all going to be in the mind. Your neighbour and you could have totally different ideas about certain issues - because you are consuming and contributing to totally different sets of information. And that will lead to immense physical conflict in the future. Very worrying times right now.