Inflation is increase in the cost of living.

You've linked to a privately written article ("The views authors express in Economic Commentary are theirs and not necessarily those of the Federal Reserve Bank of Cleveland ") by someone who worked for the Cleveland Fed, who blames printing currency for inflation. No doubt that debasement of the currency increases the nominal prices of things. But it's hard to square the idea that that's all there is to inflation when you consider that lots of countries had inflation after COVID. They didn't all coordinate on printing currency.