This would be a lot more convincing if it explained exactly what is wrong with the designs he dismisses and even more so if it offered a few examples of the kind of design he'd like to see instead.
The fact that Silicon Valley has not solved the world's problems goes far far deeper than design, we're talking about fundamental problems of shareholder driven, Tayloristic style capitalism.
Citing specific details would be begging for an immediate derailment directly into the sort details that are directly opposed to the larger point:
>'We don’t need more superficial solutions to superficial problems. We need real answers to real problems — big ones and small ones.