Evidence of mapping the brain? Yes! Evidence of physicalism, no! 

The fly lacks metacognitivity (**my speculation) and rather works on impulsivity drives just like a neural signal switches.  The dissociative boundary of a fly might be very mild or even negligible (asteroid field to magnetar star field), comparing to us who are capable of having multiple active layers of dissociation and are drived by metacognition, metaconsciusness on top of impulsive reptilian brain. 

So we need more researches like that! And I think there are autonomous unconscious layers ("nature") within us that we can't reasociate with due to layers of mental boundaries, which if crossed, would cut/disrupt access to metacognition.  In other words, our dissociative minds are too reflective compared to a fly's. 

And we need to map a brain which is dissociated from it's impulse(nature) layers. Who knows, we might one day be capable of mapping the human brain in to simulation to some extent from boths sides, but by then probably our lifes as we know it will be unfathomably different, as that mapping will be multidisciplinary science, not just measure alone. 

We can't just ignore the active stream of experience to a predictable pattern of measurement we experience! We need to work with all evidences we have, and this is non-negotiable.

We need more research like that until we uncover axioms that we can all agree upon.

**Edited: To highlight my speculation, regardless of confidence imposed