https://www.bls.gov/cpi/questions-and-answers.htm#Question_2
My take is the CPI is highly manipulated to underscore real living man’s inflation. And has been manipulated since Johnson. The reason being it affects the net GDP numbers. Want to show high GDP then you need to get that CPI smaller. Vehicles and food are the worst examples of real inflation in my opinion. Bread products, corn products, and fresh produce prices are just nuts.