However, it's worth saying that: Being intentional about relationships is not manipulation.
If I decide "I want to be a better husband" and then spend time noticing and writing down a list of things that my wife says bother her or would make her happy or she thinks would be romantic, and then I go through and choose some of them and set myself reminders in my calendar to do them... Am I "manipulating" my wife into "thinking" I'm a better husband? Or am I just plain being a better husband?
Would it be worse if I got the idea from a book titled Would it be better if, instead of being so intentional, I just let my passions and romance sweep me into doing romantic things without any conscious thought? Why?
To make my point clear: Being very intentional about relationships (how others perceive and feel about you — and what actions you take to make them feel and perceive you that way) is not manipulation. If I act in a way that makes my coworkers think that I'm a good coworker, then I AM a good coworker! The fact that it was on purpose and not accidental is...?
Manipulation happens when you develop your "be-a-good-coworker" skills (which is good) and then use those skills in a way that intentionally hurts your coworkers or makes them act against their interests (which is bad).
I see evidence in the article of the first but not the second.