This issue has been brought up before, but anyway...
Right or wrong about what? The article contains some facts and some opinions.
-It is factually true that the way inflation is calculated is adjusted due to technology.
-It is true that this practice is highly subjective.
-It is his opinion that this practice is improper.
-I hadn't heard about the housing price calculation (tied to rent, not purchase prices), but I'll assume it is true.
-It is his opinion that this practice is improper.
-It is his opinion that these contributed to the tech crash and the current financial crisis.
I disagree with those opinions.
-He mentions that in the '90s another factor was added, substitution: I agree that this practice is improper.
Now, the arguments:
He argues that the low calculated inflation rate contributed to the housing bubble. Maybe, but with or without the low inflation rate, the interest rate was absurdly/stupidly low. At the same time, the other flaws in the banking system that led to the bubble and crash didn't have anything to do with inflation. So that argument is very thin: maybe it's 10% of the cause, but no more than that.
I don't see any arguments discussing the '90s tech market boom, unless that's this:
But even reversing the adjustments that have distorted the official inflation figures won't fix the basic problem with the way we calculate inflation. Think of this: If the price of a can of soup goes up 10 cents, that's inflation, but if the price of a stock soars by 100%, that doesn't count as inflation at all.
It seems he is saying that the stock market should be factored into inflation. Well that's just silly. A company is not a product. Microsoft stock is worth 100x (made-up number) more than in 1985 because the company is 100x bigger (made-up number). And maybe that explains his position on hedonics: if that can of soup got 100x more expensive and also 100x bigger, he'd probably expect that the entire price should be factored into inflation.
Also, a speculative bubble in a market is a completely different animal than inflation. Note also, this "flaw" has always existed, so why does it cahse problems now where it apparently didn't before?
Also, calling the inflation numbers "fake" is at best yellow journalism. Any measure of inflation is going to contain subjective judgements. Whether one is better than another doesn't make the other "fake".