Yes, you're misreading it.
You need to remember that I was talking about what YECs would say, not the real facts. YEC's are pretty much stuck with the order of events as I describe it, because it's the only option that is not so hopelessly bad that even a YEC would hesitate to accept it. As a consequence they have to reject the dates provided by archaeology for the first few dynasties AND for the pre-dynastic remains.
And this is part of my point - not only must they move the building of the pyramids by a few hundred years, they also need to redate and account for ALL the precedign archaeological material. Just talking about the pyramids is letting them off too lightly !