You have a high degree of trust in humanity's capacity for rational thought, don't you?
That trust is misplaced and will backfire if you ever have to rely on it
But they think they've already done this. They used the Tools That The Ivory Tower Elites Hate like YouTube and Facebook, found the extreme crackpot content, and convinced themselves that with these tools they have finally found the truth that those nasty authority figures have been trying to hide from them!
I keep hearing this theory, but it just begs the question: how are these people deciding which sources to trust? What makes them trust Fox News, Marjorie Taylor Greene, or Alex Jones rather than other "mainstream" news?
Somehow, I don't think the problem is a lack of tools. Something deeper is going on.
Abstractly, the same way ~everyone does: heuristics, confirmation bias, post-hoc rationalization, etc. On a relative scale, some people's methodologies are better than others (often much better), but on an absolute scale they are almost all bad.
If you can make your opinion reality, by either persuading or bullying people into accepting it, you don't need to trust it - you can just choose it and act accordingly. Politics is just religion without the anthropomorphism. Societies and civilizations need to be rational all the way down, just as people are not creatures of pure logic.
They may feel no such scruples about doing so to you, though. Reciprocity is a good heuristic for many social situations, but when it goes wrong, it can go really wrong.
They could be technological, software, or maybe even something as simple as teaching people about rhetoric and how to manipulate people so that they can detect other people doing it. Teaching people about logic and fallacies. Teaching people how to infer motives.