Their goal may not be a short-term base as most people still consider 60k Bitcoin price as a low price considering how long they intend to hold their Bitcoin, so El Salvador may decide to buy at whatever price at the moment.
That's definitely correct. In some news articles I have read some 5 year plans. For example they are building Bitcoin City and a lot of other infrastructure that won't even be completed in short term.
Besides El Salvador is among the poor countries but about $60 million in bitcoin for a country with $25 billion GDP (0.24%) doesn't look that big to be honest.
In any case, this is a very exciting experiment to watch over the coming years and see how this poor country is going to be like in like 5 to 10 years from now. This could provide good information for other countries with bigger and better economies to decide whether they want to start adding bitcoin to their reserves.
Yes, fingers are crossed to see what the investment will become in the next couple of years to come, I believe this move will positively impact the economy that other countries will be referring to El Salvador for its great economic transformation.