> How were the "primitive" AE able to excavate and
> restore the whole lot of them from one end of the
> Nile to the other:
Here I present you two tasks:
1)Build a large, complex and complicated structure from scratch, manufacturing all the materials from whatever is available to you, you can go as far afield for materials as you wish, just remember you have to be able to transport them back to the site.
2)Dig a big hole in sand.
I don't know about you, but number 2 seems many orders of magnitude easier than number 1. It can be done by people who have no math, no writing, no understanding of geometry, statics, or architecture. It can be done with primitive tools and determination.
No amount of determination can overcome a lack of proper tools or knowledge needed to complete number 1.
Just to be clear, I don't think those sites you listed are necessarily tens of thousands of years old. I reserve that for specific sites in Egypt like the Serapeum, the Osirieon, and the Sphinx-Khufu-Khafre-Menkaure complex and associated temples on Giza, to name a few.
It's easy to figure out my primary sorting method: if it isn't covered in images and hieroglyphs on every available surface, the AE didn't build it. This is such a blatantly obvious stylistic difference, only those blinded by delusions of omnipotence could fail to see it.
Here's a real question tho: Why do archaeologists think they are qualified to do reverse engineering of monumental structures? They know absolutely nothing about construction, they are not engineers, they have never built anything substantial themselves, they do not comprehend the problem of moving and manipulating heavy loads, they are clueless about the logistics of large work forces, they haven't the faintest idea about materials science, etc etc. Archaeologists are schooled in languages and art. That's it. But somehow they think they are competent to tell everyone how ancient people performed their major construction projects? Hell, they think they are competent to tell us all about the religious beliefs of ancient peoples as well, when the vast majority of them are staunch atheists.
IMO, this is the primary reason mainstream archaeology has put together such a ridiculous narrative of the past. They haven't consulted experts in applicable fields before developing their theories.