Not that misleading. If you zoom out 5 years or more, you'll note increased slope of the CPI index over the past couple of years.

https://fred.stlouisfed.org/series/CPIAUCSL

It's fair to say that inflation has been at an accelerated rate over a time period that makes sense to most folks. Saying that it has decreased month-to-month is more misleading in my opinion. If you were to pick any random period in time, chances are inflation wouldn't be increasing as fast as it has been over those recent "declining" months.