Upthread you said that "a narrative mechanic is any procedure within a game that bases the resolution-- of a conflict or a question-- on factors that are not intrinsic to actors/objects within the game world itself."It affects the Rogue, though, and their ability to find the wealth that exists. The Rogue's hunger for gold should not make more wealth exist in the world to be found-- though what a wonderful world this would be, if wealthy billionaires actually worked that way!
Hunger for gold is a factor inherent to the rogue.
Now you seem to be adding some additional constraint - eg that the resolution only have regard to elements of the fiction that, in the fiction, matter causally to how the attempted thing would unfold. That is a much stronger constraint than the one I responded to!