There is indeed some truth in your observation. I'm referring to the seemingly regionalization in terms of Bitcoin adoption. This is particularly observed in the Latin American countries where various bills supporting Bitcoin are either planned or submitted to congress for deliberation.

Bitcoin is also widely adopted in Europe, where countries are more technologically advanced. In contrast, many countries in Africa are more or less indifferent to its growth.

But I guess this isn't a conspiracy. Neither is it about a massive increase in GDP from Bitcoin adoption. I guess this is simply about how countries appreciate Bitcoin and their level of awareness.

First of all, bitcoin doesn't "guarantee" employment or else the whole world would adopt bitcoin to eradicate unemployment from the world. And bitcoin also doesn't remove poverty nor does it improves the economy but yeah, it can act (as a catalyst) to make the economy better.

I doubt the neighboring countries would ban bitcoin if they see that country is doing very well after making or at least realizing bitcoin as a legal asset.

You have made an interesting observation.  I believe what is happening is that you have a wait and see approach by neighboring countries before jumping on the bandwagon.  Also, makes you wonder if adoption has been slowed in some instances due to perceived fears of being blacklisted.

You have an exaggerated view of what bitcoin can do to a country's economy. It can not do any of that, it won't guarantee increased GDP and income, or decreased unemployment, etc. Bitcoin will certainly open some new doors but it is not going to perform miracles. Big improvements in the economy of a country needs big changes in basic economic matters.

For example in Iran we've adopted bitcoin years ago and it has been used for import/exports and about 10% of the hashrate is in Iran. But none of it is the reason for the changes in the economy.
What is improving the economy is everything else, like the changes in the banking system that forces them to invest in infrastructure and production instead of what they were doing before which messed up the economy. Changes in the exports where oil is not the main export, a lot of other things are and even oil is not going to be exported but oil products are. The destination of exports have also significantly improved.
All that is helping inflation decrease, employment increase, GDP to go up,... not the adoption of bitcoin.

Do neighboring countries' policies influence neighboring countries to follow? whether a country sees Bitcoin in terms of influence or even in terms of freedom. That doesn't mean that the neighboring countries are adopting Bitcoin and the surrounding countries are also adopting it. I don't see El Salvador's neighbors do the same. It goes back to the policies, needs, and responses of its own citizens whether they have support or not. In terms of Bitcoin adoption, this is probably more of a comparison in terms of economic growth.

Where do you get that from? There are some countries where adoption will be higher but I can assure you that adoption in most European countries is minimal. And even less for the purposes of day-to-day payments. Most people buy bitcoin to speculate, but there are hardly any shops where you can pay with bitcoin and even fewer people who pay in the few shops where you can.

Not sure about this conspiracy though, I mean countries that go against bitcoin as authoritative government because they don't want to give control to the people. So it's hard to see them suddenly changing their stance just because their neighboring countries is in BTC. So for me it's really who is the sitting President or government right now, if by chance the next Bukele lost or his term as President of El Salvador expire and then the next government is against crypto or bitcoin, then maybe we will see no longer the kind of adoption in their country.

Why would that be the case just because Nigeria was first? Of other neighboring countries find out that they can take advantage of Bitcoin, they would jump in — regardless if they were first or last.

For that to happen passively, the accepting country needs to set an example first so that the neighboring countries can get some positive vibes out of it. It's not really that easy and if it would have been then trust me we had bitcoin on the go applications everywhere. Sadly we dont have it. Examples already exists such as EL Salvador and the government continues to buy more and more bitcoins with public fundings. Honestly their peeps are not as happy as they should have been because its not working out properly. That's a big issue with bitcoin adoption. The infra restricts the use case while less knowledge associated with the bitcoin is keeping peeps away from its usage.