No, I’ve actually driven from Vancouver to Alberta quite a few times, a couple to Saskatchewan, and once to Manitoba.
Outside of very specific government buildings, I barely see them*. It’s so rare that, like I said, I very much noticed when one was suddenly in walking distance of my house. I’ve seen them super faded in windows of old buildings at times, but not a flag standing outside.
(*If I go to the extremely rural areas of BC or Alberta, I will see more in a single ‘town’, and I mean like ~100 people, than I will in Vancouver, say. But those in small areas stand out and are, frankly, not usually a great sign? One house that has it also has a confederate flag up, as well as a replica General Lee car from Dukes of Hazzard)
I spent 2 minutes going down a couple streets in abbostford before finding one……
Sounds like you just aren’t as perceptive as you thought, they are far more common than you’re thinking. Or you live downtown where there’s less individualism, but I’m sure there would be a few balconies that have them, provided condo board rules don’t disallow them….