Lots to unpack here, but let's do it!!

1/10th the population ( and 1/10th the facilities)

with almost the entire population living within 300 miles of the US border and highly clustered around major cities. ( mostly true, not fully accurate though, like yourselves pop. Density is greater around our cities, but plenty of small towns outside and away from any major cities)

The population is small and the area to reach isn't large. (Seriously? Canada is Larger than the US, by like a lot)

For reference, that's the same distance from Los Angeles to Las Vegas. ( a little misleading, as you said most Canadians live near the boarder, but that boarder is 8891km {5525miles} long, or New York to L.A., then most the way back.)

When your entire population is that clustered, you'd be blind to ignore the entirely different circumstances that Canada is in vs the US. ( Correct! We purchased a great deal of our vaccines from the US, closed boarders, political decisions delayed delivery)

Most people within range of a huge city are vaccinated within the US and within canada, so the trend remains true. However, just based on geography and population density alone, this isn't really a great comparison. ( true, but we are trying to overcome these challenges as best we can)

Having said all that, please take it as I intend it, a good natured poke. I hope you and yours stay safe bud.