I don't find social media companies responsible for the user generated content, but I do find them responsible for making it damn too easy to spread fear and then doing nothing about it. Or, as in case of some, promoting the division.
But the ride the will be extremely profitable and business have shown to care more about short term than long term. Some examples are Nestle guzzling ground water during droughts, Johnson's baby powder with talc, the entire oil gas and coal industry, Pacific gas and electric company, etc.
At some point you have to consider the history of public education and it was just a tool for controlling and repressing individual thought, give busy work to lower class kids so they stay out of trouble, don't grow up to question the system. What is usually taught there? Obey authority at all cost, getting status symbols from authority is most important (not actually learning), do not interact with people different from you (why the grade separation? shouldn't people learn at their own pace?), learn not what interests you, just follow the damn syllabus choosen by someone else, don't stand out, just memorize stuff, don't read actual primary sources, just the predigested/rehashed summary. I mean, sure there might be exceptions but it's pretty much the same everywhere
What countries you think are doing a great job and why?
I agree it could be better, and it some places it could be a lot better. But when compared with the alternative -- no public education at all -- you'll see why it's a necessary foundation to democracy.
Agreed for sure on the second point. They turned everybody into publishers with global reach and still haven't really thought about what previous publishers did to make sure that power was used responsibly.