Hm... this is some pretty typical Neoliberal misinformation--just the kind I expect to see pedaled on HN. I will read this book, if you think it's important, but it's astonishing how quick you are to desire children's alienation from their feelings. Really, that's an atrocious desire. You should critically question that one. You should also consider reading bell hooks' "The Will to Change," which goes into great depth on the ways men like you and I are emotionally crippled--not coddled, crippled. At any rate, that's what you would do if you'd been "taught to critically question" your beliefs.
There's a few great lines in hooks' book about how we adopt our patriarchal ontologies unquestioningly, never stopping to think what about "being a man" we would have chosen for ourselves.
I will read "The Coddling" because I can't be in every American classroom, and it's possible I am simply unaware of some training as atrocious as "be on the lookout for microaggressions and report them," but I suspect it's a deliberate misinterpretation of the feminist understanding that the common American ideological worldview is an deference and adherence to rape, exploitation, domination, and violence. Standing against these things early on, when they're recapitulated as "mere" schoolyard bullying, is a heroic act, and not the result of "coddling," but of a stable, enriching family life--something you can read about in Deborah MacNamara's "Rest. Play. Grow."
Unfortunately, the American home life often recapitulates endemic American patriarchal violence. As hooks puts it, "the love of a father is an uncommon gem, to be hunted, burnished, and hoarded. The value goes up because of its scarcity." No surprise, then, that that children teach one another to relate in the terms of domination and submission.