I'm sure there's an argument to be made about not buying things you can't afford, but looking at the graph in that article, people are going to get fucked on mortgage renewals. Anyone that locked in for 3/4/5 years are going to be renewing between now and the next couple of years and going from BOC rate of 0.25% to 5% or more is going to hurt.
Someone I know is looking at renewing their mortgage in the next couple of months and they're already looking at a jump from 3% to >6%.