Disappointing. This is indeed a collection of essays on the significance of Pokémon as a phenomenon, as promised, but they're written by a bunch of childhood education undergrads—in spirit if not necessarily in actual fact—few of whom have apparently ever even held an actual Game Boy. Some are less bad than others, and some of the authors have obviously put significant effort into their contributions—though not usually to the extent that they bothered to double-check the spelling of the names of the Pokemans, as Kengaskhan, Missingo, and Blastoid will attest—but all are written by obvious outsiders so disconnected from any aspect of Pokémon it's hard to understand why they felt they were qualified to write about it.
(Well, I suppose that's not true. At least three of them have small children who play Pokémon, and some of the others are apparently child psychologists. For whatever reason, both of those groups often combine an ostensible interest in what kids are doing with the sort of deep condescension towards them that makes real understanding impossible.)
I guess what I was really expecting was an examination of the history of Pokémon and its economic aspects. What I got instead was the sort of half-informed busy-body bullshit that characterised educators' and psychologists' interest in me in my teen-age years, which is a pity.
Given that it's that sort of book, though, I'm also disappointed that every single contributor only sees Pokémon as the pursuit of very young children. I'm not going to go full brony and pretend college-age neckbeards are the real target audience of Pokémon while pre-teens are just irrelevant interlopers at best, but it would have been good at least to look at the actual demographics of Pokémon's audience. The book was written in 2004, in the middle of the GBA generation (though if anyone realised any main-series Pokémon game existed on a platform other than the original Game Boy, they didn't exactly let on), so I suspect the divide is wider now, when all of the kids who originally played the first games in elementary school are in college or already out of it, than it was then; it would have been an interesting thing to look into.
If you're the sort of childhood professional who (more or less) subconsciously holds children in contempt and doesn't really believe they have anything meaningful to contribute to your chosen field, I suppose you may find value in this book. I'm over it.