Richard V. Reeves, a British American scholar of inequality and social mobility, and a self-described “conscientious objector in the culture wars,” would like to skip past the moralizing and analyze men in the state that he finds them: beset by bewildering changes that they cannot adapt to. His latest book, “Of Boys and Men: Why the Modern Male Is Struggling, Why It Matters, and What to Do About It” (Brookings), argues that the rapid liberation of women and the labor-market shift toward brains and away from brawn have left men bereft of what the sociologist David Morgan calls “ontological security.”