When nobody uses the Official exchange rate for several reasons, you have to look at the exchange rate that people do use. On that matter, no the Peso was not devaluated, the official exchange just stopped being a lie, if you’d like to inform yourself about this please look at “Dolar Blue”
On that note, the only Prices that changed are international companies’ prices because they do go by it. Local Prices and other countries exchanges did not change it’s valuation even a cent.