But you can very easily debunk Shadowstats by just averaging the ridiculous CPI inflation number postulated by the Shadowstats dude over 2/3/4 decades, and put that compounded rate of 8% into a calculator and multiply it with a wage from 1990 or 2000 or whenever... And see that consumer goods/services can't have increased by that much or otherwise everyone would be destitute...
This is begging the question though. If the problem is BLS, then using BLS as a reference that BLS isn't the problem is blatantly fallacious. The claim is that BLS is deceiving us... so it doesn't make any sense to use them to adjudicate whether they're deceiving us or not. You see the problem right?
https://www.bogleheads.org/forum/viewtopic.php?p=1025266&sid...
In a more pragmatic sense, if you can't be bothered to learn enough economics to evaluate the official number (which is understandable) going with the group that sounds crazy is a bad idea.
This author talks about outside view dismissals being a valid form of evaluating a claim in the context of a cult:
"But the outside view tells you something different. These people are wearing funny robes and beads, they live in a remote compound, and they speak in unison in a really creepy way. Even though their arguments are irrefutable, everything in your experience tells you you're dealing with a cult.
Of course, they have a brilliant argument for why you should ignore those instincts, but that's the inside view talking.
The outside view doesn't care about content, it sees the form and the context, and it doesn't look good."
http://www.thebillionpricesproject.com/datasets/
There certainly is room for measurement error in something as complex as an inflation index that takes into account so many data points and weights, but the answer to resolve that complexity isn't "trust grifters selling newsletters to goldbugs".
Take quarrel with the actual research instead of the domain they're hosted on since as OP pointed out, many of them are published by third party academics with no financial or institutional connection to the BLS.
The reason people don't believe the official CPI numbers is because the CPI numbers are not properly weighted for life or dollar impact. If we look from 1970 the price of health care has increased 54x, a new house has increased 19x, and annual tuition has increased 25x. If the price of milk increases 19x what do I care? I'll just stop buying milk. I don't want to stop being alive, I need a place to live, and I want and need an education.
Even the numbers they do include seem gamed or fake. Shelter shows a 6.9% increase year over year, but the price of houses is up 17% over that same period and the price of rent is up 12-30%. I'm sure there is some ling winded explanation for how shelter excludes such and such thing, but it just loudly screams bullshit for many (most?) Americans.
>And see that consumer goods/services can't have increased by that much or otherwise everyone would be destitute...
I think people are pretty destitute to be honest.
[0]: http://www.shadowstats.com/alternate_data/inflation-charts
This is like earnestly showing the earth is flat by linking to a flat earth web site with fictional data showing the earth is flat.