Read again the comment
I don't like El Salvador and in my opinion his president is no different than those in places like the UAE, Saudi Arabia, Russia, etc... But as of today, El Salvador has a lower criminal rate than the US and most of the south American countries, that's a fact. So if being there︀ is the most danger you have ever felt in your life then I assume you︁ have never been in a dangerous places in the first place.
As a general rule,︂ no one who doesn't know how to be smart on the street should visit LATAM︃ unless they will be in places like Las Condes/Vitacura (Chile) or Pocitos (Uruguay)
Now going︄ back to the topic: Whoever who wants to open a bank account in central america,︅ should look for safer places because with a authoritarian government like the one from El︆ Salvador which has a weak protection system, I wouldn't trust its banking system.