Sacha baron Cohen stole his act. The idea of it, not the execution. Fuck him.

Is it safe to assume that every single author (apart from the ones that cannot prove their works were in any of those archives at the time) can sue meta for plagiarism and theft?

There’s a documentary called Revenge of “Billy the Kid” that doesn’t go into too much detail, but might answer your question.

https://m.imdb.com/title/tt0102783/

That’s far too long. They could try and turn it into a ditty for an advert, but it wouldn’t look great on their merch.