They are just crypto friendly but they are not even close to El Salvador if the subject here is how the country adapting Bitcoin technology. El Salvador definitely fully embraced Bitcoin to the point that there leader invest there country money on it. I think Singapore is just for Bitcoin acceptance same with Vietnam on adapting the use of Bitcoin in there economy.
El Salvador invests their government funds in BTC that's a big difference from what Singapore is doing. But like Singapore, El Salvador is turning the country into a tourist destination due to the Bitcoin adoption or it could just be hyped by Max Kaiser since he and his wife move to El Salvador to show support.
The government offers the BTC companies tax incentives and citizenship afaik. They really floored the adoption level in the country.
El Salvador doesn't really "invest" the money they have, they invest a fund that they have which normally goes into investments anyway, so they just changed investment method and moved it from like stocks or even business' (like airports which are usually more expensive than what private companies would pay to build) and that's an important thing.
What we should be looking for right now is the fact that there is a whole nation that is fully supportive of bitcoin and the bitcoin community isn't showing enough support. Max Keiser is a great example but we are not really showing love even from far afar. Like "people who support El Salvador from other nations" type of grouping that keeps pouring love. That doesn't exist.