Just like how you would use fiat as payment, like you go to a shop, buy a shoe, and pay with your card and that means you are paying with fiat, imagine a world where everything you do is the same, you still go to the same shop, and you still buy the same shoe, and you still pay with a card, but instead this time crypto is taken away from your account, could be USDT or any other stable if you must. That is the way you should imagine crypto when you think of growth, because this is global currency and not one nation.
It means that you could work and earn money in crypto, and you could spend crypto and all of those equal to you having something much better. We are going to end up with a greater result, we just need time to make that work somehow.
I don't forget Satoshi's purpose for creating bitcoin was to become a decentralized currency. But even if bitcoin served as a currency, it would not solve unemployment or reduce poverty in a country.
Also, how will we use bitcoin as a currency when not too many countries have legalized it as currency. In my country it is not banned but I have never seen any store accepting bitcoin payments. What about your country?
If you don't use bitcoin and instead use stablecoins as currency, what is the difference here compared to fiat currency? Stable coins like USDT are pegged to USD and use a centralized system. So I don't see any difference in using them as an alternative means of payment, I even have to pay extra transaction fees even for my small transactions. Meanwhile, with bank transfers and cash, I hardly have to pay additional transaction fees.
One more thing, even if cryptocurrency is the world's currency, we still have to work hard to get it, it is not created to be distributed to us for free. Therefore, it cannot help us reduce unemployment, eliminate poverty or help the country's economy develop.