Bitcoin market is smaller than stock market and it does now have magical power to fix macro things like global economy or national economy. It is only helpful for people as individuals to find a magic way to get rich or enrich their wealth through investment in Bitcoin for long term.
I don't know how much the stock market is worth today, but I remember from before that the total value was about $90 trillion, so we can say that it is worth about a hundred times more than all the Bitcoins in circulation. When you look at the statistics, it is much clearer where BTC is at the moment, but this is a reality that many do not want to accept and live in some kind of illusion that BTC will improve the world's economy.
If a country can add Bitcoin to its national treasury and have good risk management for their treasury, that requires to have some other assets, not only have Bitcoin, they can hold their bitcoins for a long time and see good growth in value. But even so, it does not help to fix a national economic crisis that only can be resolved by government and combined efforts on many aspects in their country.
Many countries have very large gold reserves, and yet they have big problems - just look at the example of Italy, which is among the top countries with gold reserves, but it cannot improve its economic situation with them because the ECB does not allow them to do so. I don't know which serious country would dare to invest in BTC in the long term, given that it is still a risk, not only because of volatility, but also the possibility of hacking, forks and who knows what else.