I feel sick to read this. The kids learned the world in a twisted way. I really think kids should know how transistor work before work on computer. Otherwise he took too much unreal things for granted.
That said, while you could try and have your 2 year old build ENIAC out of from-scratch vacuum tubes I doubt you'll have much luck - I'm pretty surprised at the degree of success the author had with text terminals at that age, to be honest. As the father of a nearly-2-year-old this definitely has my gears turning...