It will definitely going to be spread to other countries of the world, because El Salvador country was the first country to make BTC legal tender before other countries began to make it legal tender to enjoy the benefits of BTC. With this new teaching technology they have initiated to their country to educate their citizens about BTC and other cryptocurrencies, it will help many people in the El Salvador country to benefit from BTC and other cryptocurrencies.
If this new system of educating their citizens with BTC work in the country, I guess it will going to spread like the way BTC legal tender is spreading all over the world today.
Just a reminder that Bitcoin isn't a legal tender in El Salvador anymore, not only because of pressure from IMF, but because businesses are legally required accept it, and many merchants were against adopting it because of the volatility and technical issues. Not to speak of the fact BTC being a legal tender was unpopular among the majority of Salvadorans.
Imho it's better to stay as a legal payment method for anyone accepting it, then to require all the small businesses to accept it as a legal tender. That doesn't sound very libertarian to me.
This is one of the flaws of their implementation and many merchants are concern about the volatility of Bitcoin. If El Salvador assess well the situation and try to educate more the merchants or business sector about Bitcoin for sure those things will not happen.
But what still good thing happen is they make Bitcoin acceptance voluntary and merchants could still choose to accept it or not. But if I am the merchant in that country I would provably choose to add Bitcoin since it will not give people choices to pay something for the goods they bought. But also it give exposure to lots of people that my store is accepting Bitcoin. For now the current status is better since they could think about more better approach. BTC still legal in their country so everything still fine and they can deal with Bitcoin on anything that they like.