I posted the text because I realized that how people view these materials is so subjective. Rather than give my own take on it, I put it out there for the individual to evaluate.
Personally, I have found these books to be wonderful teaching tools, but of course my context is different from yours. My child is grown, and I'm working with children from a array of families and cultures. I find value in identifying negative behaviors such as rudeness as things you should not do. Most of the books do describe behaviors that are to be encouraged, but this one does not for some reason.
I like the fact that these books cover so many different kinds of behaviors that the children may not have had explained to them with any detail. There are books on Being Selfish, Cheating, Lying, Being Destructive, Being Lazy, Being Messy, Being Bossy, Being a Bad Sport and a whole lot more.
When I first used these books, I thought they would not be very useful but to my surprise mature 4 yo children and 5 yo children were really captivated by them and would ask me to read many of them at one sitting, maybe because these subjects had not been really discussed in their homes.
Another thing I like is that in several of the books, a character is used to display the negative behavior and other characters who are affected by him frequently choose not to treat him as he was treating them. Sometimes this is done in a context of giving him another chance, and sometimes it's done in the context of empathy for him. But in other books a negative behavior results in fewer choices of playmates, and I think that's an appropriate lesson for a child to learn.
Another thing I like is the exploration of how negative behaviors affect those around you. It would seem that you have to explore the negative behaviors to explore those affects, so again I don't have a problem with the 'don't do these things', especially since the books usually do detail behaviors that are encouraged. I don't know why this book on rudeness does not.
Regarding the 'grey' areas, I agree that it's important to address grey areas, but for me personally, I think you have to establish the black and white and then build the greys. And working on the grey areas never seems to end, as the many ethical debates raging in our times seems to demonstrate.