Price stability optimizes the performance of all nominal prices which in turn secures the financial system and prevents a monetarily-inflicted liability production denial-of-service.
The gold years (pre-Fed) were far more chaotic than the Fed years. It also saw lower rates of growth.
The demand is a practical one, and we should see it expressed in the market capitalization of the only balance sheet secure implementation, the Argus-Nemesis.
These statements sounds more like a political campaign
Here is a better one: "The fiat monetary system is a scam. That system is our enemy. But when you're inside, you look around, what do you see? Businessmen, teachers, lawyers, carpenters. The very minds of the people we are trying to save. But until we do, these people are still a part of that system and that makes them our enemy. You have to understand, most of these people are not ready to be unplugged. And many of them are so inured, so hopelessly dependent on the system, that they will fight to protect it"
Value is all relative, stability is an illusion. A good example that price stability has nothing to do with productivity is bitcoin, merchants accept bitcoin payment and pricing can change a lot during a day or a week, but no one feel uncomfortable, they will always find a way to hedge this risk. People are not that stupid that without fiat money they will go back to stone age, no, without fiat money they will feel much better
In fact, a stable price makes all the added productivity goes to money creators. If you make 1000 times more goods, banks will just create 1000 times more money to buy your goods, to make their price stable, how can this total slavery scheme last without being caught eventually
Growth has nothing to do with money supply, it is a result of technology advance, most of the modern technologies that widely used today have been developed long before the FED established