This is clearly untrue; they're called "social media" because they developed inside other things that were already called "social media".
There are many places which are more democratic and free than US ever was, its not a secret information but you won't hear about it in latest hollywood flick or fox/cnn. One only needs to travel a bit outside US bubble with open mind.
US system of 2 parties is pretty dumb if you think about it, artificial in pretty bad ways and not really transferable elsewhere. Constitution and laws which are less than toilet paper when power is taken by sufficiently motivated bad actor, 0 working checks and balances. It could have been worse of course if thats how we want to rank it, but we are not even in the half of it and something tells me we haven't seen the worst of it yet.
Over time it's become evident open model is far, far more effective at ensuring the public has confidence the people running the place are doing the right thing. It does risk the occasional unwarranted "witch hunt". But that threat ensures powerful people avoid doing things that while above board, could arouse public suspicion. Less suspicious acts mean higher trust in the government.