I do count bennies as narrative-focused mechanics, yes.
Why?
The SWADE rulebook gives seven uses for bennies, only one of which exerts direct narrative influence, and that's one you could houserule away and have players not blink an eye. The other six are (in terms for folks who don't know the system):
Reroll a attempt to perform a task
Shed being Shaken (shake off a stun, basically)
Soak incoming damage
Get a better initiative
Reroll outgoing damage
Get some magic power back.
None of this is particularly "narrative". Some might call them "dissociated" mechanics, in that they are not clearly attached to some physical game-world action like drinking a potion, but their focus is not on the narrative itself.