If over time, you change the way you measure inflation[0], to manipulate government bond rates and Social Security payouts[1], then it's not surprising you end up with a world where inflation is not directly related to central bank actions.[2]

[0]http://www.shadowstats.com/alternate_data/inflation-charts

[1]https://www.businessinsider.com/if-people-knew-the-actual-in...

[2]https://www.investopedia.com/articles/07/consumerpriceindex....