They took the enshitment too literally

As far as I can tell, that theory is quite fringe and does not have much support from peer reviewed tests.

The quarry is basically next to the pyramids, and the main issue with transportation was most likely space constraints: there’s only so many people that can work at a given time on the pyramid itself, regardless of how much manpower the Pharoah could muster.

Carrying up millions of tons of powder sounds way less practical than carrying the solid stones to me, and making them off-site just to carry them up doesn’t seem to make sense.