"C programs crashing is a fact of life. If anything goes wrong the operating system kicks them out" is _very_ bad advice for someone learning C. The introduction reads

> This book is for anyone wanting to learn C, or who has once wondered how to build their own programming language.

which I interpret as having "design a language" as another goal. Arguably the book succeeds at building a programming language, but it mangles the theory in unhelpful ways, e.g. lexical scoping isn't a static analysis per chapter 16, nor is parsing the consumption of an abstract syntax tree per chapter 10.