Intermediaries who likely cannot recognize it and won’t think twice about reproducing it, even if later on it does get transformed back.

What the original impetus for creating and distributing it is irrelevant to anyone subsequently encountering it.

To continue the knife analogy, even if the knife factory was also in fact owned by some maniac, the salespersons in the retail stores still not assigned blame even if they promote the knives.

The salespersons are just random middle men who couldn’t possibly have been expected to personally investigate the actual background or provenance behind what they’re handling.