The difference between the US and the rest of the world is that the US has the First Amendment, which it upholds. So, for example, in the US "hate speech" is not banned, and while inciting violence is banned, it must be literal incitement:
https://en.wikipedia.org/wiki/Hate_speech_in_the_United_Stat...
This is important, because freedom of speech was supposedly allowed behind the Iron Curtain as well, as long as it wasn't "going against the socialist order" or "promoting fascism" (with capitalism or social democracy being just light fascism). Various countries found ways to pay lip service to human rights, while being authoritarian.
So the US only upholds 1A when it decides it wants to. In other words, no, it doesn't really uphold it.
(And for the record, I'm mostly fine with that! I'm tired of this idea that absolute free speech is a thing, that people actually have it in large numbers, and that if they did, it would actually be a good thing.)
I don't know what "absolute" means for you, but yes, free speech is good, the more free it is, the better. As to your popularity fallacy, consider that for most of our time on earth, constant war and slavery were normal, and our grand-grandparents knew both.