When I said they were genuinely excited I was, of course, taking into account 57 years of reading people. I’m not a dope just 'cause I don’t know all the implications of 64 bits.
The things they are doing with the photo app would not have to do with color, or only a limited slice is about color. They are doing facial recognition down to selecting the photo with the smile over the photo with the frown from a burst of photos taken of an action scene. Evaluating for sharpness, white balance, motion blur, over a burst of photos and finding the “best” (which I agree will need to be seen to be believed or judged.)
I’m saying those kinds of operations would benefit from bigger gulps. Lots of math going on there. Is it all GPU? I would think just moving all that data around would benefit from bigger bytes. But, in all honesty, I don’t know, and I appreciate your explaining it to me.