Why is information intelligence not taught in schools?
Much like an immune system, we need to be exposed to nonsense so that we're constantly vigilant. There will always be a group of nutters who believe in flat earth, that vaccines cause autism, etc... Trying to cut that off at the source just throws these people into underground cults. A more scalable, sustainable solution is to
1) teach people to do their research - properly, as in, don't go on Facebook and join "Flat Earth Society Boston" to find The Truth
2) teach people it's okay to change their minds - part of this spreading cultism is that political opinions are now core identities
3) teach people to tolerate opposing viewpoints, even the silly ones - point and laugh, but don't try to cancel and destroy their lives
Another thing - every time a tweet or document is censored, the replies are generally cut off as well. How can people learn to distinct true and false if they don't get to see examples of people being wrong and corrected.