That will only be true if everyone who invests in bitcoin makes a profit, but is it easy to make a profit in bitcoin and will no one lose money investing in bitcoin? We need to acknowledge that bitcoin is a financial market and it is a battlefield, where weak hands will become liquidity for diamond hands. That means there will be winners and losers, and how will we improve the economy if we lose money?

Bitcoin is just a currency or volatile asset, it does not create jobs so I do not agree that it will be able to reduce unemployment.
Why do we often say that we should only invest what we can lose or we need a job with a stable income before investing in bitcoin...? Obviously, bitcoin cannot play a role in reducing unemployment when it cannot create jobs.

Bitcoin can potentially play a role in the economic growth of a country which can make a huge difference in the multifaceted progress of that country. If Bitcoin can be integrated with the way in which the traditional financial system of the country is growing, the global economic system can be radically changed.
Here are some recommendations:

Enhancing Investment and Economic Diversification: A country can attract investment and increase the scope of employment through innovative activities using the wide range of technologies of Bitcoin and Blockchain, which can greatly contribute to the economic growth of the country. Countries such as El Salvador, for example, have explored Bitcoin alongside traditional financial systems to further strengthen their economies, and their scope continues to grow.

Financial inclusion of common people: Bitcoin can contribute to the economic growth of a country by including a large population by opening access to savings and buying and selling beyond the limited services like conventional banking system.

Exchange of Remittances: Remittances are very important for the progress of a country. Bitcoin can play a real role in reducing the fees and time of traditional services when citizens of one country send remittances from another country.

From an overall perspective, a country can explore Bitcoin with their economy in the light of wide knowledge of the strategies to increase the holding and increase the scope of transactions and access to the exchange, which can contribute to the growth of that country in a big way.

Looking forward to your more recommendations.

Yes it can play a vital role in the economic growth of developed and developing countries but only when these earnings come directly under the finance department of government. Countries generating revenues by implementing taxes on resident’s earnings. So in this scenario taxes should apply on earnings from bitcoin.

I don't think it is even so good for countries to have a lot of BTC's in their reserves, yeah i know the network is censorship resistant and anyone can buy BTC, but governments are centralized and if they control a lot of the BTC's in circulation, it may not be good for the decentralized network, and could leave it open to manipulation. However, i don't even think too many countries are interested in storing BTC in their reserves, it is decentralized and it cannot be printed nor controlled, so it is not an asset they may be interested in.

Yes it can play a vital role in the economic growth of developed and developing countries but only when these earnings come directly under the finance department of government. Countries generating revenues by implementing taxes on resident’s earnings. So in this scenario taxes should apply on earnings from bitcoin.