First, German physicists must believe the following idea:
Electromagnetic waves do not need vacuum as carrier medium.There is no way to make this sentence into a correct one, or to interpret it in a way that is correct. It is dead wrong. Ok, everybody is entitled to have opinions, even wrong ones. But now comes the German side of the story: the German Physical society wrote an official letter to all ministers responsible for public schools.
The German physical society wants all teachers to teach this false idea to all pupils in secondary school / high school.The German Physical Society has now come down to the level of the intelligent design people, who also want teachers to teach false statements to children.