The French Finance Minister Bruno Le Maire criticized Facebook's planned Libra cryptocurrency. He said Libra should not be seen as a replacement for traditional currencies and that it cannot become a sovereign currency. Le Maire believes national currencies' status as sovereign money should be maintained and that Libra could undermine this if used widely as a substitute for national currencies. The document also discusses issues related to inflation, money printing, and how cryptocurrencies could impact workers' salaries and buying power over time.