Germany committing to ODF and open document standards

I wondered about that too. Your figure of 169.4 Mio EUR certainly is a good sign. Also, there's this phrasing in the linked report:

Der IT-Planungsrat setzt sich dafür ein, dass in der Öffentlichen Verwaltung offene Formate wie das Open Document Format (ODF) zunehmend Verwendung findet und bis 2027 zum Standard für den Dokumentenaustausch wird. Er beauftragt das Standardisierungsboard mit der Umsetzung.

Which can be translated as follows:

"The IT Planning council promotes the goal that open formats like the Open Document Format (ODF) are increasingly used in the Public Administration and become the standard for document exchange by 2027. It directs the Board of Standardizations to implement this.

That's making me hopeful.

Also, note that the decision is from 26.03.2025, so maybe something more on it can already be found by now...