The underlying value presented in the book is that it is a good thing to have women in leadership, and while it might never be the case that women outnumber men in particular positions currently dominated by men (e.g. executive positions), equality is something that modern nations should strive towards.
This particular book in the series is focussed on understanding the differences between generations in their cultures, expectations, and responses to leadership. It looks mainly at three generations: Boomers, X, and Y, and to a lesser extent, Veterans. It looks at different aspects of leadership, such as the question of how each group of people defines leadership. In the case of older generations, leadership means having authority and respect - but for younger generations, leadership means showing mutual respect and leading by example. On the one hand, Boomers look for job security; on the other, Generations X and Y do not put their trust in a single job and expect to move around. Generation Y is motivated by lots of positive feedback; Generation X rails against micro-management; and so on.