That’s untrue, without certification the film is neither censored nor banned but only allowed for adults.
Additionally the Federal Department for Media Harmful to Young Persons could review the film and place it on the index of restricted media—which still wouldn't constitute censorship, as adults would still be permitted to watch it; it simply could not be openly advertised or sold.
It could also be confiscated; that is the point at which one could speak of censorship.
Due to the lack of proper age verification, Musk’s release of the film on Twitter violates German laws on the protection of minors.