"Demic Diffusion" Dynastic models: R.I.P

Although by now intellectually relegated to a fringe-status [mainly radical Eurocentrist or affiliated cults] in the face of overwhelming & mounting evidence, there is still a crowd out there that is distressed by the prospect of the Dynastic Nile Valley complex being recognized, well, as autochthonous. The very idea that "sophisticated" or "advanced" complex culture(s) does not begin in Europe,