Yes, applying the appropriate grease* in only the appropriate pad-movement/shim areas of the brake pads does make a positive difference.
Of course be very careful not to get any grease on the pad or rotor mating-braking surfaces! (please modify your graphic to Not suggest pad-rotor "mating surfaces" but rather as I have described).
I too apply grease* to the wheel hub-face, but that's more to counter dissimilar metal 'occlusive seal' which thereafter makes wheel removal easier. Always careful not to get any near the lug bolt holes - 7S Power's example shows another vehicle with fixed lug bolts and I wouldn't apply any grease near threads for same reason!
*historically I've used copper grease but there are now better types specifically for this brake purpose.