The countries that did not engage in significant QE are also experiencing significant and similar inflation.
Even if I had stable wages and production in my country, if suddenly every trade partner was charging me more for my imports (for example due to supply chain constraints), then my inflation would go up.
It is very stupid to just speak for inflation by looking at one country.
The exchange rates should just shift continually so that the country that isn't expanding its money supply doesn't experience inflation.
Which means you admit there's a mechanism for inflation without it being a monetary phenomenon. Which means that it's possible that it's not a monetary phenomenon in the US.