[Corazoor]

The constitutional court in germany already made a ruling that specificially rules out removing the protections of article 79. (Correction: It was not the constitutional court, but it is the current interpretation among lawyers and judges.)

The logic is rather sound: The article already protects the principles of articles 1-20, not the articles themselves. So changing article 79 to remove the protections is already touching on these principles, and is therefore inadmissible.