Which is all true, and an interesting example of how defying copyright laws can lead to a positive outcome.And it was a good thing that order was skillfully defied and prints shipped to safety. Nosferatu is a classic and one of the scariest movies ever made.
That said, the main reason why Nosferatu is of artistic and historical significance is because of the value added by the creators of the movie. While copying the book's basic story was a breach of copyright, the craft and artistry of making the film itself wasn’t.
By comparison, what value is added by copying and distributing other people’s RPGs and supplements?