The debate over whether Bitcoin is a Strategic Reserve or a Medium of Exchange is arguably the defining economic question of 2026 and I dont know maybe long long long way before this 2026.
Not really, because the way that you set up the question and many others do is wrong. It is not an or question, it can be both things and to some degree. These functions are not binary options, either it is or it is not. They are on a scale, it is already both to some degree -- we don't need to specify exactly how much as that would be subjective.
On the other hand, major players like BlackRock and even other companies are treating their Bitcoin as a treasury asset. When governments and corporations lock Bitcoin away in reserves, they remove it from circulation, driving up the price for everyone else.
Very few companies are using it as a treasury asset, and as such this should not be mentioned as only a few examples exist. I would not even mention it at all until some of the big companies get in on this and in a way that shows long-term commitment. If a big company adopts it only to dump it a year or two later, it is meaningless. People are desperate to find the "next big thing" happening, that is why the put false valuation on rather meaningless events.
Bitcoin as medium of exchange is kinda different before this I made a post that basically how different Bitcoin and stablecoin, Nobody use bitcoin to buy a coffee with current transcation unless you are using lightnign network or other Layer 2 and its the key so Bitcoin could be use as medium of exchange
Bitcoin works fantastically as a medium of exchange, with or without Lightning. If people and merchants do not know how to use it correctly, that is an issue with them and not an inherent problem with Bitcoin.
Well, the idea of backing Fiat currencies with Bitcoin has been floating around for some time. For the USD, some say it's impossible since the huge national debt surpasses the whole market cap of BTC. But hey, governments used to back Fiat currencies with Gold. Even if the "yellow metal" has a "small" market cap (compared to nations' debt). Never say never.
This idea is unlikely and not even popular enough to bring up for discussion. It may change in the future, but don't talk about it as if it is actively being explored or tried by several entities -- it is not. Having a few panel discussions about it is not the same as seriously considering doing it.