This is just for show, and facts won't follow. It's not the first time a French government vows to stick to Open Source. Yet most of the public money goes to proprietary software, and Open Source is the exception.
A few days after that, a major state-owned institution (Polytechnique) announced it was migrating (including the email system) to MS Office 365. Even if it violates several laws and official decrees (it's a semi-military school).
Source (fr) https://cnll.fr/news/polytechnique-men-office-365/
Two months ago, the French government signed an "open bar" contract with Microsoft for the "Éducation Nationale" department. 152 M€, not for Open Source. Source (fr) https://www.april.org/nouvel-open-bar-microsoft-le-ministere...
A few days after that, a major state-owned institution (Polytechnique) announced it was migrating (including the email system) to MS Office 365. Even if it violates several laws and official decrees (it's a semi-military school). Source (fr) https://cnll.fr/news/polytechnique-men-office-365/