That's not the point of the book; the point of the book is to build symbolic recognition and memory by hooking into words you already know. It's not there to teach you vocab, which is how one does learn readings and usages.
I will say that even about half way through, many kanji I see are no longer unintelligible blobs, but I can identify them with high accuracy and associate with a word. Sure, I can't read them, but I can recognize them, which is all I need to associate that with vocab with readings.
I already tried sitting down with kanji vocab and it wasn't worth it - I'd recognize kanji only from context and the general shape of the blobs, as if they were fuzzy in my mind. I was unable to actually write them, because I didn't recognize the components from which most of them are formed. Heisig removes those worries automatically.