* https://www.pragcap.com/why-is-there-deflation-in-hyperinfla...
And then again in 2017:
* https://www.pragcap.com/theres-still-deflation-hyperinflatio...
And November 2021:
* https://fullstackeconomics.com/no-the-real-inflation-rate-is...
Seriously, these guys are garbage.
If you want to verify the official numbers yourself MIT has some code:
* https://en.wikipedia.org/wiki/MIT_Billion_Prices_project