I think this is obviously false and hurts the credibility of the rest of this comment.
There are many pitfalls with measuring long-term inflation. How much did an internet connection cost in the 1970s? What about a computer? What about a smartphone? These modern technologies make peoples lives much better and were somewhere between impossible and impossibly expensive in the 1970s so an inflation metric can’t really take their price changes (from infinity to cheap) into account. Another is quality. Compared to the 70s, a new car is faster, safer, more comfortable, and more fuel efficient. Similarly, most houses are bigger and better in America today.
I think it is important to note that talking about long term inflation is different, and perhaps harder, than talking about short-term inflation which is what the OP is about.