Ah, I see. When you wrote "Canadian Pizza," you meant it as "this specific style of pizza by that name," and I misunderstood that to be "a pizza made in Canada."
I think people need to stop blaming the USA for this pineapple pizza confusion. I mean sure, we're guilty of a litany of food crimes, but that isn't one of them. (That's far too creative for us Yankees. Here, we're more about the "cheap, mass-produced corn syrup and GMOs." That low-quality chocolate, watery yellow beer, and over-roasted stale coffee that you can't seem to escape? You're welcome.)