First of all: Don't start reading a real book from a too low level. It's absolutely fantastic that the author has the energy and perseverance to attack a real book, but it can quickly end in frustration for most people. The author says he passed HSK4. Let's assume that his Chinese was actually a little bit better than HSK4 which would correspond to a vocabulary of around 1800 words. This sounds a lot but it's actually...nothing. I can only assume that his real level was significantly higher than HSK4, otherwise he would have seen many more than 5-10 new words per page (20 or 30 per page would be more realistic for the first 50 pages in my opinion).
Second, in my experience, even if you know all words of a Chinese text, you are still very far from understanding it. The grammar is a bitch. What will probably happen is that you will stare at what you assume is a sentence and wonder whether you accidentally got some old edition where the characters are printed from right to left or vertically. It's a pity that the author has solely focused on vocabulary acquisition in his article. That could give readers who only know Indo-European languages the impression that Chinese is somehow like Spanish (or even Farsi) where the sentence structure is similar enough to English and where just knowing the words can be already enough to enjoy a book.
(Edit: language)