Neoliberal globalism has lost an awful lot of its shine over the last decade or so, and there is something honorable about Easterbrook continuing to loudly proclaim the virtues even as the political and media tides have sunk the position. Which partially explains, one supposes, the low regard in which Mr. Easterbrook holds the media, though his constant emphasis on the tendancy of the American press to focus on the negative is well-founded.
But generally, the single easiest way to improve one's overall happiness is to focus on gratitude, and The Blue Age is admirably fixed on the idea that we need to take proper stock of how good the world has it on the variety of vectors free trade and safe ocean transit have enabled. And therefore, his entreaty that we continue policies that allow for this state should be heeded.
That said, he enlists some dubious political arguments, inflates dumb counter-positions to subject them to ridicule, and dismisses some apropos economic and psychological theories out of hand. Easterbrook has alway had a bit of a reactionary moralist strain, and while it is admirably consistent (he's anti-Trump even as he blasts "Obama entitlements"), it's still a bit tiring. He also brings some clear-eyed thinking to China, only to backtrack into recommending a more wishy-washy position regarding them.
So, as with many of these light-poli-sci tomes, while I can't recommend the book for its expertise or masterful grasp of facts, I can recommend it as a source of ideas one can use for sharpening one's thinking on these matters.