There's two recommendations here for "Expert C Programming".
I read it cover to cover fairly recently; I don't think there was really anything I disagreed with, but there also wasn't anything I didn't already know and wasn't already practicing. While I've been programming C a while now, that surprised me. I've decided that the book isn't bad but is probably more "help get you from beginner to intermediate" than "help get you from intermediate to expert", much less something of use to an expert (sadly, in my position).
An alternative interpretation would have it that there is just not enough to say about C that an expert-level book is likely to say things a C expert would not already know. That would argue against your point about the complexity of C. As I say, though, this has not been my conclusion.
[1] Except that Eliza was named after the character from Pygmalion - I'd somehow never put that together!