It seems more descriptive than prescriptive. I am sure it is true, but it seems hardly useful.

It's like saying "we finally found the success sequence for breaking into upper middle class in three easy steps: 1) get a high paying job, 2) get raises every year matching or exceeding inflation , 3) avoid layoffs". Or the good old-fashioned advice for becoming rich: "buy low, sell high".

These are all 100% true, but also 100% useless.