I'm Canadian too, and I was surprised to read that line.
I've spent winters in Northern Quebec where the temperature regularly hovered around -40C and it was glorious.
Everything sparkles. Everything.
In fact, -40C feels warmer than +5C because there is no humidity in the air to make your skin feel the cold.
If you are unprepared for the weather, trying to get by in shorts and t shirt, you're absolutely going to have a bad time.
But so long as you're bundled up and your house has good insulation, a -40C day is usually much more enjoyable than a +40C day.