There is no book cop in the sky making sure you read every word, so I don't see why this would be a source of worry for anyone. You can "read" a book however you want to read it. Personally, I don't know why someone would deliberately skip sections. If I don't want to be reading the book, I'd just as soon put it down and move on to the next things than keep turning the pages w/o really reading the content. But if that's how someone wants to handle things, then so be it.