When you say this, I'm not sure if you mean that the book:
A. Removes doubt from the things that are genuinely simple and straightforward, freeing your mental energy to focus on the complex dynamic uncertain parts.
B. Deceives you into thinking there is a cookie-cutter solution to be applied without concern for uncertainty and risk.
But that's a good question. IMO, there's two chaotic things humans have to deal with - war and software. Both of these adopt a lot of processes to deal with all the chaos.
There's an interesting military anecdote by Joel Spolsky. If you're at a mine field, you stop. If you're being shot at, you charge at the enemy, while shooting back. If you're in a mine field and being shot at, which do you do? You charge and shoot because stopping will just get you picked on one by one. These rules are thought out in advance, so everyone knows what to do in the situation.
The book is similar, but for startups. It feels rigid, but it tells you the next step. So my answer is A.
So by the time they reach the funding stage, they're no longer a startup. The emphasis of the book is more on how to create a company that's easy to fund.
It's a classic, but for some reason not too popular. As the subtitle says, there are literally step-by-step instructions on how to build a great company. It's a little dry. It's a 600 page book. And checklists can be intimidating.
I didn't even read the whole thing, but it shows how the process is more like R&D than gambling, and removes any doubt. I feel like a lot of modern startup "advice" was pulled from this book and mutated beyond recognition, becoming more like cargo cult.