that is a good point
some holes we know are for blood and nerves to go through which modern man does not possess
those are the holes in the elongated cowns with 25% more brain matter and 2 plates , front and back
the holes in the top of those skulls are different holes and the feeling is "mateing" , from those skulls in the video and the holes on the top may easily be for helmet enhances thus the 25% extra brain capacity not within the mated was compensated by use of helmet enhancer to increase self organizing thought/charge from our environment thus prompt ability to manipulate matter, to a degree