"Most multimedia franchises"? What else are we comparing ST to? Yes, comic-book-based stuff is a tangled mess, but what else?
Tarzan, Dracula, Zorro, Godzilla, Planet of the Apes, etc.: any numbers of characters and concepts that appeared in multiple movies, TV shows, animated cartoons, novels, comic books, remakes, etc.
As I've written (many times) before, even as a kid, I understood that the original Tarzan novels, the old black-and-white movies, the new color movies, the TV show with Ron Ely, the various Saturday cartoons, the Gold Key comics, and so on did not exist in one seamless continuity--and I never expected them to. Nobody cared about "canon" back then.
Nor was I puzzled that the Hammer FRANKENSTEIN movies were set in a different continuity than the old Universal films--or I WAS A TEENAGE FRANKENSTEIN, for that matter.
And, honestly, the DARK SHADOWS movies and novels and comic books bore little or no connection to the continuity of the original TV soap opera. The first feature film, HOUSE OF DARK SHADOWS, was essentially a remake of the TV show (with a lot more blood), and the second one, NIGHT OF DARK SHADOWS, pretty much ignored the TV show entirely, aside from giving the characters the same names.
The idea that everything needs to fit into some sort of consistent "canon" is very much a modern obsession. Trust me, we didn't worry about this stuff when I was a kid.
Anybody else remember the FANTASTIC VOYAGE cartoon? Or the various different KING KONG movies and cartoon?
EDIT: And as for THE ADDAMS FAMILY, don't forget the Broadway musical!
