At the risk of getting too political for this board... Almost everything you wrote is incorrect.
• The US is not Argentina or Zimbabwe. No one is manipulating the data. The BLS is totally transparent about its adjustments -- and that's not what you do if you're trying to hide inflation. If the numbers weren't reliable, someone else would produce alternative measures, because getting the right numbers is too important to too many major corporations.
• CPI does, in fact, include costs such as housing, medical costs (including insurance), child care, and so on. It's all documented.
• "Hyperinflation" is when costs rise by 50% per month. That's impossible to hide.
• Standard CPI does not include substitutions based on rising prices. Substitutions are used in something called Chained CPI, or "CPI-U." By the way, CPI-U is consistently around 0.25% lower on average than traditional CPI.
• Hedonic adjustments are based on the quality of products, not consumer enjoyment. Per the BLS, it "refers to a method of adjusting prices whenever the characteristics of the products included in the CPI change due to innovation or the introduction of completely new products." Oh, and if a 40" 4k HDTV cost you $1400 last year, and costs you $1200 this year, and now includes Netflix without needing to hook up a $100 device? Then yeah, that means the price dropped.
The rest of your claims are awash in negative bias (look it up) and money illusion (look it up).
This can be easily illustrated with gas prices. Everyone freaks out when gas rises by a few cents per gallon. But I'm reasonably sure that you don't remember how many times the price of gas fell over the past 5 or 10 years. You probably don't remember when gas prices most recently dropped, or by how much.
Anyway. The price of new and used instruments is rising because demand is increasing, at a time when manufacturers can't increase supply. It really isn't that difficult.
I am not an econmist (and you might be so I will be careful here!) but I am a professional investor and analyst. I am not mostly incorrect but I will accept that your analysis and interpertation of some things differ from mine, that I made a couple of errors in fact, and I was vague about a couple of points you latched on to.
Before I get into that though, I want to address a couple of points you made, namely that I know which country in which we live and more importantly I never said anyone manipulates the data. I said the index is constructed by human beings (at the BLS). Furthermore, I know they are transparent as I linked to their site in my OP and am reading it now. With that in mind let me clarify a couple of things and reply to others.
-CPI has rent for housing costs and owner equivalent rent. Rent increases are often controlled for periods of time either contractuallly or in the case of certian muicipalities, by regulation depending on the pricing of the unit, the income level of the lessee, the district in which the unit is located, its usage, etc. Not all but some. Personally speaking, I gave up on leaving NYC and moving to the burbs in CT because homes to purchase literally rose 40-60% where I was looking. Owner equivalent rent is not the same thing as the cost of purchasing a home though it does track housing values (more on that later).
-CPI has medical services, not health insurance per se. My wife and I had to change plans because last year our broker informed us that our former plan went from about $32K per year premium to $80K. I have lots of friends with similar tales of woe. And before that outrageous hike, our heath insurance costs went up double digits every year.
-Again, education and childcare are omitted from the CPI.
-I stand corrected on energy.
-Hyperinflation is a rapid rate of inflation. If there is a 50% montly threshold that needs to be met to have license to use the term I was not ware. I am certainly not at John Williams' level of skepticism!
-On hedonics, if you read what I wrote I conclude my paragrah using TVs as an example by saying that the logic is that the new more expensive proucts are so much better. I will edit.
-Substituion is substitution
-This is a national index ergo my point about owner equivalent rent. This will vary greatly region by region which is particularly important given weightings for shelter, medical services, etc..
The most importnat point I made though was this: I think about how much of my spendable income goes to the omitted items I listed above and how much they increased every year and the CPI number is utterly meaningless. And my situation cannot be all that different than others'. You can call that money bias; I call it dry analysis that demonstrates the disconnect between the stated CPI and actual cost of living for many people which was the overarching point I was making.
And yes, gas rises and falls. Personally it doesn't bother me that it does but it does effect other costs. Remember back to 2008 when gas did the same thing and all the shipping carriers hiked their rates. When it fell back to where it was they didn't decrease their rates. Rinse repeat.
Lastly, let's also remember the OP's is talking about what is happening now. And what is happening now is a perfect storm of shortages, supply and demand (for instruemnts) and all of these rising cost inputs whether or not in the CPI.