Why are people in El Salvador protesting? How do we know their govt-provided wallets aren't also govt-controlled? Why were they unable to exfiltrate their money

Why are people in El Salvador protesting? How do we know their govt-provided wallets aren't also govt-controlled? Why were they unable to exfiltrate their money before? I don't know what's stopping Chinese people from getting fiat out of the country, but they can certainly invest in whatever they want abroad. They still aren't more free until they're actually out of China permanently.