I think it's unfair to bash Roman history
Heh, it sounds unfair to bash Ancient Roman history ... until you read for yourself some of the things the emperor and others actually said! And proudly did.
And to claim (without basis) that Egyptians and people from the Middle East are so knowledgeable about their past also seems out of place as if the Italians don't know their own history.
Of course, modern Italians are knowledgeable about and proud of Ancient Rome. But they are also aware of its less than admirable aspects.
Besides, since most of Europe was actually part of the Roman Empire, when Europeans critique Rome, it is often an "insider" point-of-view.
and then look so fondly on Ancient Egypt given their slave culture and worry about the sensibilities of modern Egyptians when they are so far removed from Pharaoic history, culture and religion.
Ancient Egyptian slavery was mainly indentured servitude, doing work to pay off a debt. It became the foundation of a quasi-socialist system, where the pharaonic state owned everything, thus demanding taxes, but supplying collective projects and wellfare for the Egyptian citizenry.
The situation was different for foreigners, however, who were captured in war or captured and sold to Egypt. The slavery for noncitizens was actually slavery.
Fact is no one is sure how they actually built those pyramids that's the knowledge we are dealing with.
Today, archeologists know exactly how Egyptians built the pyramids.
Happily, archeologists found the tombs of the people who build the pyramids.
Because of the Egyptian custom of writing the accomplishments of the dead on the wall murals of the tombs, the people described how they built the pyramids.
Basically, they created an artificial mountain of sand. They used sand to slide the massive stone bricks (ashlars). Then made a ramp of sand to slide the bricks up to the next higher level. Then made the sand ramp higher and higher, as the height of the pyramid construction progressed. When they placed their top stone and were finally done, they swept away the sand.
Archeologists now have found where they dumped the sand afterward, and where they got the sand from.