We don’t grow our crops in a desert. They grow in very specific regions of the world, often in areas that are suitable due to natural formations and easily obtainable water. Most of Canada is forested land that is uninhabited with no infrastructure such as roads, running water, or electricity - not to mention there has never been a large agricultural presence in those areas, so it would have to be started from scratch, if it is possible at all.
When you say we’ll huddle around the proverbial fires, it might be a very small human population. Our civilization (likely including both of us) probably won’t be around at that point.
I’d like to hear whether return2ozma believes this or is just posting for points. It seems very out of character for them to post this article.