Bitcoin can be very helpful for poor countries that have high inflation or unstable currency values. Bitcoin as an inflation-resistant asset can provide a hedge for the country's residents. In addition, countries with less stable economic policies may see Bitcoin as an opportunity to attract investment. But it is still necessary to be vigilant because Bitcoin's high fluctuations should not cause further losses.
When a poor country invests in Bitcoin, they will invest thinking about profit, in such a situation, if high volatility is created, it will definitely create disruption for a poor country. Bitcoin has high volatility, so I think Bitcoin investment will not provide much help for a poor country. Bitcoin investment definitely requires a long time, so a poor country is not in a position to wait for that long time.