The communication to its people is the one of the most important power a ruler has. Around 50 years ago, governments could influence their nations with state-owned mass media such as tv and radio. Then, private tv and radio came, then the Internet, they lost control but not much, they still could control or subtly influence communication in large part.
Now with FB, it seems that they lost any control and new right-wing parties are way more experienced in employing social media for their needs. Instead of pushing millions into social media and government-driven bot armies, they whine and call for censorship.
I think FB won't do anything, what can Germany do? FB's power is much bigger than Germany's government and legislative. Which is a disturbing thought.