It's true that the book is not written by someone with a deep understanding of technology, but this is mostly a story about Steve Jobs the man, and not technical detail. What comes through in the book is that Jobs was a very difficult and troubled person with a tremendous energy to try to do things 'right' (for his definition of right).
I've found it a very enjoyable read. Here you have a book written with the cooperation of a man who knows he's dying and wants to talk about his story. It's an interesting book because it's not a hagiography nor is Jobs making excuses. Early in the book he says straight up that he behaved poorly towards his parents and Lisa Brennan-Jobs and at the same time can't quite recall stiffing Woz out of money for the Atari work.