Yeah, and what the One Piece do is create Devil Fruits
Welp that makes sense! Like how the Devil can grant your deepest, darkest desires especially for power/wealth/fame and other vices and the monkeys paw consequences of wishing for stuff like that too! Devil fruits have their "curses" after all ofc!
I wouldnt be surprised if Zoans are the key to the origins of DFs since they have their own sentience and Luffys DF is actually a Zoan now too ofc.
Its like the theories of Zoro, Sanji and Usopp manifesting their own devil fruits into the One Piece world with their own abilities and wills too, maybe even Nami and Franky could do the same potentially? Brook? Jinbei? Not for them to eat/gain but inspiring their creation somehow?