Isn't twitter part of the market of ideas? The NYT ect? The idea that we could have an information ecosystem devoid of human judgement is new or at least not widespread before the internet. It was part of a utopian idea, not entirely different from the ethos powering say crypto that we could encode simple rules and the truth would filter to the top, but that isn't how the public square worked before the internet, quite the opposite, your ability to reach anyone outside your town was pretty dependent on a small handful of companies and those utopian thinkers never really managed to show the rules they came up with for how that information should be spread resulted in truth