(FYI currency debauching is a concept thousands of years old, nothing to do with the 'paper redemption problem' you articulated re: modern US government policy).
Currency is - and always has been - a social contract and a function of some kind of economic base or market.
A 'well managed' currency is exactly what is needed for economic prosperity, just like everything else in the real world, not some mathematical solution.
BTC doesn't work as a currency primarily because it's not the currency of any economic region, and is therefore pointless from the start on that basis.
As a 'store of value' it's really just a magic number, which technically has some usefulness, but really it's just a curious novelty.
BTC is designed and propagated originally by people who have absolutely no understanding of money or finance - a total and utter misunderstanding of all of it. Now that it has many incumbents who've invested huge amounts of $$$ in it, those 'vested interests' keep it alive along with the koolaiders.
Like NKLA stock.
It's why for example the US/China/Canada/UK/EU just don't magically 'agree on a currency' in a big 'trade agreement' because it's not feasible, it makes no sense.
It's why the 'Euro' is a constant grinding problem hanging over the EU; while it has transactional and accounting advantages, the 'single currency' cannot simply paper over the very fundamental differences between national economic systems. If the EU went 'full fiscal union' - that would help, but it would also imply constant and massive direct wealth transfers from Germany and Netherlands to 'everywhere else'. Those 'transfer payments' would be one way of recognizing systematic imbalances. Having 'national currencies' instead of the Euro would be another.
The 'best currency' in the US is the USD, the 'best currency' in the UK is the Pound.
If you want a 'store of value' then buy real estate, commodities, stocks, bonds, a pool of other currencies, or better yet, a cheap ETF that's spread among those things.
Frankly, if there were a 'global currency' it would be de-facto something like a massive, well managed ETF fund whereby 'credits' would map to a portion of said assets. It could be anonymous, and maybe transactions could be decentralized - but - there's no getting around mapping the value of the currency or asset to some part of the system, they cannot be independent. And frankly it would need to be 'so huge' that it would imply a kind of Global Central Bank of some kind, which we would never agree upon.
BTC is a very curiously novel and interesting thing but it's not the right solution to anything.