But consumers don't really experience the year to date inflation number, they experience the month to month change, which was 0.1%. It basically takes a year for the year to year number to come back down even after inflation cools.
I don't know if people don't understand the math or maybe they expect prices to go back down (which usually won't happen much except for raw commodities), but lets say in May of 2020 prices rise 10% then stop going up. You will still get a 10% year to year inflation rate report every month until May of 21 even with no prices increases over 11 of those months.