Leadership books, even when they are biographical, focus on the aspirational aspects of leadership, not the reality of the human experience including all the negatives of leadership, all the frailties, the failures, when it doesn't work, why is leadership even needed, can people lead themselves without needing some power imbalance or some guiding personality. Silent leadership doesn't have a voice and it is never written about but it much more effective.
It is a perversity, leadership that gets a voice is not longer about leadership, it is about the cult of personality. Trying to extra some human traits of leadership removes all the context of the social constructs that made it occur therefore it provide a false sense of what it means and how to recognize it.
The very notion of leadership, that it is embodied in a person is flawed, it is only in the action and only what it is a collectively acknowledge outcome. When this happens people are not thinking about leadership, they can only point to it in the past as something they want to label for some reason.