The idea that your local culture is superior to foreign also is problematic, not in a normative way, but in that it almost certainly limits new ideas and general diversity.
The solution is more likely that information is hard to parse and more information is harder. The thing not mentioned in this that I think is the most critical part of the "change" is that historically fringe and minority ideas were kept in check because of basic principals of attention economy. If 10 people believed things, there was most often a limit as to how many those 10 would reach. Now fringe ideas can speak to MANY people, and can be dynamiclly adjusted to catch.
Previously the only real organization that had huge reach was the government and we built a Rube Goldberg machine to insure that one voice didnt dominate. Facebook, Twitter and Google are all bigger than all governments and there is no checks and balances other than one dudes whims in each case. Im all for free market, but this information delivering system is too large, too unregulated and probably for better and worse is going to deliver a deeply different world than we all grew up in. That new world seems more reactive.