Here's what the author had to say when I emailed her:
Well, JB, you didn't understand it. It's satire. That's why it seems
contradictory; through much of it, I'm saying things I don't mean, adopting
the attitudes of ignorant right-wing Americans precisely to demonstrate how
foolish they are, using ridiculously extreme language that no responsible
journalist would use. I am praising Canada. I save my sincere feelings to
drive the point home at the end.
It got into print because my editors recognize irony.