It’s specifically dangerous for your American democracy.
The global south opting out of the IMF / World Bank debt slavery and copying El Salvador means fewer places to export USD inflation to for which you receive cheap imports in return. This at a time when no-one wants USTs and your banks are imploding..
20 years ago the CIA would have just set off a colour revolution or sent in the troops to put things in order but the bureaucracy is so inept now that the old tricks don’t work so well any more, and it’s not just 1 or 2 nations bucking that need to be contained, 3/4 of the globe is saying “enough” to the hegemony.
Don’t think that’s what The Economist was getting at but often there’s a kernel of truth to these things, even if unintended.