The articles were written way back in the bronze age of poker where most of the players wondered what the raise button was for when you simply could press the call button instead. This doesn't mean that there wasn't (or isn't) a way to exploit the weaknesses of players even more. The basic articles are what they are: basic guidelines for players who don't have any knowledge or skill to determine what relative hand strengths are, who don't have a clue about what a range is and are totally helpless about predicting what their opponents might do next.
So they get a set of simple instructions that tell them what kind of absolute hand strength merit what kind of action and what to do if they encounter resistance. Given the environment back then that was enough to actually win or at least hold your own in the micros (and I think it still works with todays lowest micro limits as long as you play full ring holdem).
The goal was to not overwhelm a new player with information while giving him somethings that works. Still, it was dead easy (and still is) to acquire bronze status where you can get a lot more information. You just had to solve a quiz or play a single hand for real money in a partner room (lowest stake is enough).
Understanding the principle of relative hand strength and adjusting to the game of your opponent is taught in the articles of silver and above.
Today the game is much more competitive even in the micro limits. It is desirable for a new player to get to the silver status quickly where he can find some really important principles explained. Pokerstrategy acknowledges this and makes it very easy to acquire silver status with the 10 strategy points a day promotion.
I also think that coaching micro limit players has evolved a lot compared to the old times.
For example 7: a lot of the opponents back then would have checked behind a Q at the river because of fear of a K. These guys: http://www.pokerstrategy.com/news/world-of-poker/+EV-Cartoon-of-the-Day-82_73686/
Of course that still makes some of the advice in the article outdated.