Everyone is looking at El Salvador to be “the home” of Bitcoin, but I believe Singapore is better to be the true hub of the Bitcoin industry, with serious players.
The "legal tender" and the fact that's rather close to US make El Salvador very important.
The fact that other countries are Bitcoin friendly doesn't mean that much. And while El Salvador has its
place in history now, Singapore will probably have quite a competition into becoming a "hub" (and probably not from El Salvador).
Singapore has made a lot of effort on the technological sector. It cannot be said of El Salvador.
Singapore has clean governance, and almost zero corruption. El Salvador’s government structure might be corrupt everywhere from the bottom to the top.
Singapore’s banking industry is what made the country develop into one of the richest countries in the world. It can further develop by embracing the Bitcoin industry.
Imho these don't matter that much and the comparison is uneven. And you tried to compare apples with oranges, making a fruit salad.
As long as the banking industry didn't embrace Bitcoin in Singapore, all you are saying is wishful thinking.
And the history has shown that the "possibly more corrupt government structure" has already done a step the "almost zero corruption" govt of Singapore was afraid to make. So comparing the corruption may not bring anything useful.
I think that El Salvador will probably not become a tech hub for Bitcoin. It may very well be that even Singapore won't be that. Imho, whether we like it or not, US has bigger chance for that.