The established Academics have a strong reason to attack these findings because the new physical evidence does not align with what they have been teaching in colleges. It in effect says that they are wrong, but since it is "science" that makes it impossible for them to be wrong.
Egypt based historians do not want to do anything that would deviate from the beyond impressive nature of the Pyramids in Giza. I spend my day in massively complicated engineering designs, and those pyramids still blow me away. But what if they are not the oldest.
The following two ideas come to mind about these subjects:
Human life in 1800 was about the same as Roman times.
We went from telegraphs and Electricity to Man on the Moon in about 100 years. In 100 years we made massive changes to our way of life world wide. 100 years is chump change in terms of human history.