Interestingly enough, the common principle of symmetry is sometimes applied where there are slim chances to be noticed and other factors are more important.
Looking at this example, it seems to me that having the trunk handle centered on that hidden area is more helpful for anyone used to find it exactly in the centre of the trunk lid, than trying to have the camera-handle assembly evenly spaced from the two license plate lights. Still, this is a better approach than other solutions, where the camera is located exactly in the centre, pushing the handle to the side. I think that even after a while, one may still try, routinely, to reach for that latch control at the middle of the trunk lid. How many times did they try to open the trunk by pulling on the rear view camera?
Is the location of the camera that critical? Although I have a feeling that many will say, after reading this article, that they never used anything else but the remote control to open the trunk.