Earlier quoted context omitted.
Disregard new accounts that claim the sky will be falling. The debt will always be going up and there will always be inflation. That's how fiat currencies work. Research the federal reserve and it's stated objectives to understand why.
If the way fiat currencies work is constant devaluation in the name of increased short term spending, then it makes the currency utterly terrible to invest and save in in the long term. If this is how its supposed to work, then your money is a toxic asset which should be handed off as quickly as possible to someone else. And so if no one actually wants this asset, then it makes it valueless.
That's why it's called “current-sy” (only slightly joking) It's for current use as a medium of exchange. For investment/savings, you go to productive assets.
That's the whole point. Mixing those functions doesn't help anything.