> they were designed for “technically precocious boys”—idealized younger versions of the developers themselves
I was a technically precocious boy; I got my start on Apple II computers in the late 80s. I think it's common for nerds of my generation to look at newer computers, particularly mobile devices, and worry that they're robbing future generations of what we had in our childhood -- a computer that gave us an open, kind of hard-to-miss invitation to tinker, learn to program, and go as deep into the software stack as we wanted to go (it wasn't actually that deep on those old computers).
I'm tempted to think that I wasn't actually that special as a kid, and if newer computers were designed for technically precocious kids, there might be more such kids in future generations. But then, in my family with two brothers and a sister, I clearly was the only computer nerd. And I think it's likely that my siblings (and especially my mother, who was using a computer for real work) were happier with later computers than they were with our first Apple IIGS. So while I admit I was initially indignant at the quote above, I can see why it was actually pointing out a real problem.