Spend an hour driving through Canada on the way to the US, cross the border, and drive for another hour, and you will be disabused of that notion.

Something you can do in lots of places.

Americans are OBSESSED with the flag to a degree Canadians are not.

In terms of national symbols, maybe the Maple Leaf is present in a lot of places, but what you fail to remember is that the American equivalent is a "star" - of the "stars and stripes" or the colours red white and blue.

Try to find me an international American symbol (in space or otherwise) that doesn't have a star, a stripe, or red-white-and-blue, and you'll see it's equally ubiquitous for them.