This is very good news for us as crypto users and El Salvador is the country that further legalizes bitcoin and becomes a legal means of payment to be used in the country, and this decision is well planned and I believe the Government of El Salvador has considered all the risks that will be faced by the country if bitcoin becomes a legal means of payment, If later the Government of El Salvador can take advantage of bitcoin well then the country's profits will definitely be obtained easily.
If the government of EL Salvador had planned to legalize bitcoin as the legal currency in the country then there should have been no incidents of protest by its citizen. We have read a lot of news that protest were held at some point against the government's desire to legalize bitcoin as a legal currency. If the government had planned it well then the citizens should have accepted its decision without incidents like ATM burning.
Although it seem that now some El Salvadorans have accepted the legality of bitcoin, the government still needs to make further socialization effort so that it can function properly for its citizen. Regarding profit, the government can impose taxes on those who trade bitcoin or other cryptocurrencies as well as from those who run businesses or service such as exchange.
That comes off as quite a novel theory to me to be suggesting that a government has not implemented something properly based on the fact that there are protests. Another question is about how much you seem to be presuming that the protests are representative that the "people" are against the way the law was implemented in El Salvador..
Regarding how taxes might be imposed upon the people, each country comes to its various balances in how they collect taxes to fund various aspects of governmental expenses... Do you have some specific examples of any recent government announcements regarding the various ways that you are speculating that the El Salvador government is going to tax bitcoin related transactions? By the way, this thread is not about other crypto currencies, so I cannot see how it might be relevant to say that the El Salvador government is going to do x, y or z in relation to bitcoin merely if they were to announce some taxation policy in regards to some other cryptocurrency? You might have to explain if there is some connection that you know about that is happening in El Salvador or you are speculating completely without any information at all besides some kind of a snip-it that you heard in Mainstream media.. which also might not necessarily be representative of what is actually going on (on the ground) in El Salvador.