Only in archaeology would that be considered reasonable.
Egyptian civilization didn't spring up out of nowhere. It can't have. It evolved over many, many years. The unification in c. 3100 BC implies that even at that early date North Africa had a substantial population and complex political structure.
In short, they'd been there for quite some time. They didn't develop over night.
They were AE.
I don't have a horse in this race, but unless the Egyptologists can come up with a contemporary document that shows definitively that Giza was built c. 2500 BC, then their entire timeline is subject to scientific scrutiny no matter how much they want to circle the wagons.
You demand such evidence from anyone who disagrees with you, but can't produce the same level of evidence.