Do you think a poor country will experience peace if it makes such a decision?
There may be conflicts indeed, but not of a military nature, but via financial pressures.
The IMF has pressured El Salvador to abandon its pro-Bitcoin policy. It wasn't successful in El Salvador's case, because the country was financially relatively stable, and even if it had accessed some IMF loans they weren't in risk of defaulting. But a heavily indebted country with a weak economy, like the poorest African and Asian countries or Haiti, could succumb to this kind of pressure if the default risk is too high.
Adopting Bitcoin could offer several advantages, such as increased financial inclusion, reduced transaction costs, and protection against inflation.
I agree here, but a pro-Bitcoin strategy for a poor country is a big challenge. And it depends on the type of country we're talking about.
A small country with low population (less than 10 million) could adopt El Salvador's model: a pro-Bitcoin policy in such a country which attracts investments from the outside, or manages to create a thriving regional industry hub with Bitcoin/crypto startups and service providers, could already make a difference for the local economy.
In a larger country, let's say from Cameroon's or Ghana's size on, however, it's more difficult to directly benefit as even a relatively large crypto sector would only raise the GDP by a tiny percentage. If the banking sector is very underdeveloped and only a small fraction have bank accounts, then there are indeed chances the population could benefit by financial inclusion. But in larger countries often already some reasonable fiat-based fintech services like M-PESA exist.
So the question is which problem should be solved. If it's inflation, I think there are chances with a Bitcoin-positive strategy because one could lower the demand for foreign currencies; this for example worked a bit in Argentina - people bought USDT instead of the dollar, reducing the demand for the USD proper and reducing pressure on the exchange rate. But you have to take into account that this has to be accompanied by a strategy which keeps the fiat supply in line with demand, e.g. resist the temptation to "print" too much money.