The Rocket Company is well worth reading if you are a space nut. The authors are opinionated and don't really do justice to alternate ideas. Sometimes you get the feeling they are skipping over the hard parts. But they explore a lot of areas laymen don't think about, and that can be fun.
While this book is technically a novel, it reads more like a long, fictional HBS case. The characters and plot are unimportant. You are meant to read about the business and engineering and be interested in that. It's a book for nerds.
Technically, the book is so-so. The authors downplay testing. They push ultra-thin engineering margins. They introduce complexity where it seems unnecessary. It often seems like AMM (the rocket company) is doing things the hard way. Maybe these are literary tools used so that the authors can talk about their interests, but the reader is often left thinking "there's no way a rational company would do things that way or spend money on that". They approach business questions with a bit of wishful thinking. Regular VC discount rates do not apply. No real competitors will ever arise. To their credit they do at least think about business issues.
Good space books are thin on the ground. This one deals with a lot of the real complexity of an engineering company, and that makes it interesting. It's obviously timely, since numerous real companies are beginning to push into this world. If it was a book about any other topic, I'd give it three stars, but it's so unique in its depth and thought on this topic that I have to pump it up. In summary: It's a book for nerds. Mandatory reading for space nuts. Should not be taken as gospel.