No country is willingly importing this divisive rhetoric. Aspirational young citizens who repeat the same formula within their home countries and are quickly rewarded with status and power. So the scourge continues. Short-term, this toxic, zero-sum behaviour reaps havoc. Long-term, American culture capital will have been exhausted and the US will have signed its own death warrant.
It's definitely being brought into other countries one way or another. Back in university, I went to study abroad in Japan and there were several American professors at the university. The one's teaching arts courses such as English, Journalism, etc. would definitely sneak America's political rhetoric in their lessons. Now, I work for a Japanese company in the US and often go take business trips to Japan and can definitely see the American influence in the company's culture, namely because management is looking at what American companies are doing in order to be competitive on a world stage.
One of my Japanese friends also noted to me that his peers who studied abroad in the US definitely brought back American style politics with them, and would view their Japanese school / work environment through an American lens, bringing up similar complaints to Americans, which Japanese who haven't studied abroad in the US, would think little of.