I read through half of them and completely disagree. Most of the ones I saw had to do with history and geography. Those are the two subjects you'd learn from a formal education that I care the least about. They have no bearing on your ability to manage a team or run a profitable business (unless the business has something to do with those topics).

Where is my time better spent? Reading the biography about an ancient historical figure or reading a programming book relevant to my profession (and passions)? I argue the latter, especially since I don't care about said historical figure.