Having moved from Australia to the US then Canada and having spent over and month in more than 50 countries around the world, I can tell you the US does this more (better?) than other countries.
The entire US system and political discourse is setup as right/wrong, black/white, right/left, and leaves no room for discussion.
In America you're either pro-life or pro-choice, pro-guns or anti-guns, etc. etc. There is no middle ground, no room for a discussion and certainly you can bet your bottom dollar nobody would ever listen to someone from the other side and perhaps learn something.
Happily, in my experience other countries are not nearly as bad as this, and I hope like hell we don't follow suit like we have with too many other bad habits of the US.