But they do manipulate the rules frequently to make it seem like the inflation is not as bad as it seems...
"They" = the Bureau of Labor Statistics[1]. Do you know who appointed to head of that bureau? Donald Trump.
Can you cite a source that explains how (and why) a Trump appointee would want to hide inflation from the public?
1. https://www.brookings.edu/blog/up-front/2021/06/28/how-does-...