You're seeing it the other way round. The peso was already widely devalued in the black market, he just removed the artificial subsidized "official" rate to which few privileged people could access. No one is saving in fucking pesos. Commodities got more expensive but salaries in USD terms went up
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official

informal

You still have distortion, this means no free market yet.
Only higher food prices, salaries are not up and not everybody has a salary, retired folks sure don't.
He only had to free the market, and he didn't. Everything else is cope.