El Salvador is already one of the people that big investors talk about, because he has strong principles against the large number of bitcoin adopters after he legalized bitcoin as a legal medium of exchange in his country. while the market conditions are fluctuating, will he be influenced to sell or will he continue to survive? current issue!
I guess they will learn from market fluctuations like how we did since 2013.
People from El Salvador who buy bitcoins and spend it for their day to day life's need will not mind about the fluctuations of bitcoins but people who get into bitcoin just for the purpose of short term holding might be facing problems of losing their hard earned money value due to bitcoin fluctuations.
One of the probable solution here for El Salvador citizens must be, if they spend for bitcoins for the purpose of using it as a legal tender then they must spend bitcoins as early as possible; it means do not buy bitcoins for month long expenses just buy bitcoins for one or two days' expenses hence short holding may not hurt much. This way they may get chances to escape from wild fluctuations of bitcoins.