Inflation has been a central bank obsession since forever. Back in the 1970s, there was too much of it. Now, there's too little. Above, the data shows us that there's a lot of downside risk to prices, which, if triggered, would throw things into a deflationary doom-loop. This needs to be avoided.
Plenty of voices on the Internet and on more traditional forms of media are still scared of inflation. They'll tell you to buy gold and bitcoin, because there's going to be a loss of trust in fiat currency. This is not a fear that haunts central bankers in advanced economies these days. The idea that central banks are good at stoking inflation is sort of dead.
Canada's central bank, like others, is mandated to achieve "price stability," but it's not the kind that fights off inflation. No, it's been on an "inflation-targeting" mission to prop
up consumer prices to fight off deflation - the new threat haunting central bankers.
Deflation is terrible for the economy because prices shrink and the currency becomes worth more over time. This is a problem for businesses and consumers, as it means paying back those consumer and commercial loans will cost more and become harder. As a result, further credit creation slows as businesses and consumers fear a strong currency. This is what makes deflation such a huge problem; it creates a doom-loop where no credit equals no growth, and no growth equals no credit.
You wouldn't want to get a mortgage in a currency that grows stronger ever year - it will cost more than getting a mortgage denominated in a currency that depreciates. So, deflation transmits strongly into macro outcomes: deflation erodes credit creation and constrains spending on transactions that get recorded in GDP.
Unfortunately, it's not clear if the Bank of Canada understands this, and I'm afraid they're not going to understand what needs to be done to get out of this situation.