I'm not saying the book didn't have it's uses, because there was some useful information in it, but overall, the drawbacks were just too big to be worth keeping it, or recommending it to anyone.
First, the obsession the author has with "all autistics are obsessed with video games, and won't do anything else given the option" was offensive, and completely off the mark for me. It was a real turn off for someone not interested in such things, and even when I was, I didn't let it interfere with functioning elsewhere in my life.
Second, the fixation the author had with "fitting in", and "not acting autistic", especially in public, I found very ableist, and counter to everything I learned years ago as a self-advocate!
My other objection to the book was that although it claims to address ASD in adults, it actually focused solely on adolescents and emerging adulthood, and therefore, people looking to get their first jobs, and live independently for the first time. Not particularly useful for those of us who've been adults for quite a while, and are still struggling with the NT world.