What utter garbage. Plenty of folks made it into modern times without developing the ability to write, ride horses, farm or build cities. The idea that such features follow a linear time frame is infantile at best and if it represents the best science that creationists have to offer then they won’t be offering a challenge to real science for some time.
The Evos are the ones that claim that we slowly evolved over millions of years in linear time. Creationists believe that man was created fully formed and fully functional, and if anything, that we have degenerated (both physically and mentally) since the time of Adam and Eve.