Does WeChat cause the same problems in China as Facebook & Twitter in the west?
The US is basically free-speech fundamentalist. Expression trumps truth, with that view in mind you by definition can't deal with the problem.
The pandemic is a pretty good example. There are actually a lot of protocols and behaviours that have shown to make it so hundreds of thousands of people don't have to die regardless of what timezone or nation or religion or political party you're in, yet aided by constant social media barrage the US is so divided it can't even manage to enforce that.