I think you have a point here and brevity matters. At the same time, would his advice be more credible if he was struggling the way I was with various distractions ( and I am still in a lot better place than an average internet user these days )? Alternatively, would a blogpost take away from his point about digital distraction?

Amusingly, as a result of all this re-arranging I did as a result of the book, I restarted writing a book for my kid. Not a lot, but a little bit each day should an inspiration strike.

It helps to allow mind wander a little.

TLDR: I don't disagree with your point, but I think it may have been a conscious decision beyond fiscal considerations.