Hi Open mind,
That's amazing. The best I did, was to hike to the top of San Gorgonio, second highest peak in Calif. Nearly froze to death, as it was so windy.
They may have soaked those ropes in a weak solution of "Hide Glue". I have some, as it is used for making guitars. This would make those ropes stiffer and likely stronger. It has been discovered, they used hide glue when building their furniture.
In my proposal, we are using approx. 7+ times less rope, than if you were to use a spiral ramp or switchback approach. Every time you add an additional rope, you reduce the strain and friction by a measure of 1/2. How much stress and strain would there be on 7 ropes used in the pull? Answer, much less.
Part of the problem maybe your impression of the size and weight of the average stone used in the building of the Pyramids. They are 2.5 tons each, and measure 127 x 127 x 71cm. or 4.17' x 4.17' x 2.36'
They were not moving behemoth stones, as they always portray. Only known to be at the base, and up in G1 King Chamber.
This is to size, and a more realistic representation.