It is indeed a sad thing for those who may not feel comfortable with Bitcoin as a payment method but it still revolves around their ability to manage the volatility of Bitcoin since their government are bent on enforcing the law on the citizens.
But I do believe that things will be different in coming years , those ones who are complaining of this will surely benefit from this decision in coming years. Countries are watching closely to see the impact of this adoption on the economy of El Salvador before they can take their own decision.
Yes they will totally benefit from it later in the future, if they take the decision, but they should also still learn more about crypto, since the government is not backing down on it's support for Bitcoin and cryptocurrency.