@Ashley, let's agree to disagree on the "neo-keyensian myth" part, you are obvious not a macroeconomist so pardon my inclination to listen to people who actually have a clue. Like Milton Friedman, a strong free market advocate and by no means a keynesian who would be the first to point out the foolishness of the Bitcoin macro design.
As for the "how are people supposed to save using inflationary money" open challenge, the answer is easy. Acquire and hold cash for the short term, a few months at most, then invest them in any way you like: a bank deposit, stock, a retirement fund, land, your teeth, canned beans, ponzi schemes etc. The inflation tax you are subjected to during the hold period, less than 1%, is negligible compared to other taxes - assuming you pay taxes.
There is simply no such thing as 100% safe and stable way to store wealth, and money should not be hijacked for this purpose. What if by the time you retire the
fertility drops to such an extend that there aren't enough young people to service all the old people for their hard earned cash ? Well, old people should get their ass back to work then, and realize a careless retirement is not a right. And price inflation is the best mechanism for that. Something you done in the past has a lower value for me today and I refuse to inherit the society's debt towards you.