I know that apparently, some American travelers put Canadian flags on their luggage or carry on then claiming they’re from Canada (the dead giveaway on debunking this is their passport, since how can you be “Canadian” when you have US citizenship unless you’re a dual citizen in possession of both nationalities) since some of them have hatred towards the US or feel ashamed of the country due to its internal affairs.
It absolutely used to be. Whether it still is, I can only assume.
But decades ago, there was a joke: “How can you tell if a tourist is American or Canadian? The Canadian only has ONE Canadian flag on their gear.” US folks did their best job of overdoing everything, and would plaster their stuff with maple leaves.
For many years, another sign of a Canadian was having an item from the Mountain Equipment Co-Op. Almost everyone travelling had a jacket, a backpack, or a container with the beloved MEC logo. Then MEC got turned into a shitty for-profit company held by American vulture capitalists, and now it means nothing.
So…yeah. At least historically, and probably now as well.