This book isn't as bad as all the reviews you've read. I've taught overseas, in the US (elementary, middle school, and high school). It's definitly not the best! but, the skilled instructor can make many of these activities work for the benefit of the students. On the contrary, because the materials are so 'general,' it takes more creativity and (sometimes) more preparation for the ESL/EFL teacher.
Give it a try. I'd recommend it to more experienced (and some inexperienced) teachers. Use your imagination and creativity in teaching!