That is the reason, you are correct. What I've learned in the past two years is that the web is chock full of blogs that repeat tired old "tips" that are either outdated or just plain wrong and that other blogs that give fresh insights and new tips but wrongly give readers the impression that those tips are gospel (ie set in stone).

The trick is to do your own homework, don't take any advice as absolute, fit everything to your unique circumstances, and always remember that your mileage will vary. I've spent enough time reading a lot of crap and had to learn to be extra judicious the hard way. I take most articles like this as very loose guidelines. It was definitely a great article with good advice but I know better than to just run out and apply it just because the experts said it. Experts contradict each other all the time.