Seems to me that if the idea was used, the major problem of exact placement would reman.
I wonder how the idea works with megatonage stone blocks - mass is mass and the effort needed, while less than hauling, would still be conciderable.
The ramp theory is another weakness since to get to the top, a properly sloped ramp would have to be so long as to exceed the space available on the plateau.
Until someone actually builds a full-sized, exact replica of a late pyramid, I continue to hold that there is no way to prove that the Egyptians were actually building new structures rather than repairing existing ones. Ancient Egyptians propaganda aside, an older non-local civiliztion from the First Time may have built them.
Just speculating.
Exact placement is less a problem than it sounds. To start with, archaeologists have found a large stone mason site at the quarry used for the stones. The stones were accurately cut from the very start.
Egyptian stone masons were very adept at their craft, and had an assortment of cutting and grinding tools that were both simple and effective. I’ve seen some of their work in elaborate carving in diorite, one of the hardest minerals.
For example, to make a clean cut in a stone, they would use a string dipped in sand.
From the quarry village, they likely installed the eight wooden “wheel pieces”, so they could roll the block to the dock where the boats awaited. The boats were expendable and would take the cut stone downriver, and never return, so they were always replaced with new boats built upstream.
When the boats arrived at the point of the Nile closest to the construction site, they would roll the stones to the site.
Dirt ramp building was quite advanced for its time, and was so respected that it was still remembered and used by the Romans in their capture of Masada. That enormous dirt ramp still exists.
It was designed to handle heavy loads, as well as being used as an inclined plane, as I have suggested. That is, to have stuff dragged up it.