But what kind of content? It seems like the kind of content that a facebook backed community would bring is the same kind of content that gets mocked endlessly by those on the fediverse.
In some books, I'm thinking of Dresden Files, I think it has less to do with the faith of the vampire and more to do with the faith of the person using the symbol. With Dresden, he uses a silver pentacle that his mother gave him and it has the same effect.
That's true of most comics, really. Most of them could have been books. Or lines in a joke book. Transitioning to a visual medium is simply one method of telling jokes. You don't have to do anything any specific way at all.
(Remember, when magic is well explained and documented, and people get used to it, they tend to call it technology.)
Depends on the kind of magic. Magic machines that do wondrous things? Sure, technology. Magic where you manipulate energies with the power of thought and will alone? I'ma stick with magic, thank you.