I think that putting cohesion and coupling on a 1 dimensional axis is kind of disingenuous. There are an infinite number of design changes that could be made and some of them increase coupling, some of them increase cohesion and all number of variations between the two variables. The best designs will find cohesion and coupling at local maximums.
I'm not saying you are wrong, but most of the literature indicates that high cohesion is correlated with loose coupling. The entire industry treats them as an axis so I don't think it is disingenuous for the author to do so.
I was a bit unclear: my general point is just that you can decouple code in ways that doesn't necessarily increase cohesion and you can decrease cohesion in ways that doesn't necessarily increase coupling. If you are designing a system with some rational interfaces and layers of abstraction, then most of the time you will find these two variables have a very direct relationship.
