Maybe, but back then it wasn't related to Nika; that was Shyarly's vision specifically about Luffy.
In this case, the "dark/destroyer" Nika is a local version of the lore seen exclusively in Erbaf. It's directly tied to Loki's claim of being the Sun God, and we even see the Giants actively bickering about what Nika actually is. We haven't seen this kind of debate anywhere else—in every other place, Nika is strictly known as the "laughing/liberator/white" figure:
Only here we have seen this kind of "duality".
Anyway, I've said my piece.