Singapore is not going to announce bitcoin as the main currency like El-Salvador. What Singapore is planning is to create a legal framework for the crypto related businesses. Singapore is well know for their business friendliness so it was very much expected for them to create a framework for everyone's benefits. This will possibly allow its citizens to use bitcoin as a payment method but under no circumstances, bitcoin will be notified as the main currency. Singapore's administration is quite well educated not to take such suicidal decision especially when they have an example of El-Salvador.
Singapore is already strong in its position not consider bitcoin as legal tender. They're added under the property which can be used for investment and can be bought through different channels available. Singapore is recognised as the best country to open business based on the survey made by World Bank in 190 countries. A perfect framework will make way for the betterment of cryptocurrency into businesses.
I need to suggest that El Salvador haven't failed, it have taken a big step forward. Maybe now it looks like a suicidal decision, but the growth will happen for sure. If the market could've turned bullish after the adoption by El Salvador, we could've praised the country which is the hard truth.
But yes, with the help of the legal framework, Singapore is possibly trying to become the crypto business hub for the world. And with their determination and corruption free administration, they are highly likely to achieve that.
The corruption free system itself a big success for the government and surely it can serve as the crypto business hub for the Asian market.