The site shadowstats.com, which is one of the granddaddies of the "inflation stats are rigged" claims, says that it "unrigs" government inflation statistics. It does this by simply adding 10%.
Ironically, the cost of membership at shadowstats has stayed unchanged since 2008.
If real inflation were 10% higher than the government is reporting, then real GDP reported to be growing say 3% would be shrinking 7% per year. (We have fairly accurate numbers on nominal GDP from retail sales, sales taxes, corporate accounting etc.) Over 10 years people's standard of living would drop by 1/2. It's safe to say that has not been happening.
Yes, obviously.
You can look at individual items and see how their prices have changed. Things that scale with technology and efficiency improvements have indeed gotten cheaper or tracked inflation.
But things that require human labor or don’t benefit from technology (like a nurse, or food, restaurant) are up 50% just in the past few years.