I do hope that there will be no regression in Bitcoin developments in El Sal. It's the country that started it all and became history already, but it would be better to see this history become even longer and more legendary regarding the adoption of crypto and Bitcoin.
I personally think that El Salvador will be a dramatization of the Bitcoin era, and they will set an example for other countries, companies, and even individuals. This investment will play out in one of several ways:
1. El Salvador sells all of their Bitcoin for a huge profit, and the president looks like a smart guy, and then they move on.
2. Bitcoin crashes in price and El Salvador takes a huge financial hit, then they vote out the president there, or worse.
3. The current president gets voted our for unrelated reasons, and the new regime sells the country's Bitcoin at a profit or loss.
4. Some corrupt official(s) there mess around with the country's Bitcoin holdings and "lose" it etc.
There are probably other scenarios.
One thing I don't think people understand is that investments have one purpose:
to make money. You buy low and sell high, and then use the profits to improve your life. Hence, the idea that El Salvador or anybody else would hold on to their Bitcoin "forever" is just plain stupid. That's not how it works.