Someone was pointing out that Catherine Marshall was able to write books because she had a position as pastor's wife, meaning that regular non-pastoral people cannot write books. But that logic does not necessarily work as a rule. Many pastor wives do not write books for whatever reason, and also many non-pastoral people can write very good books. So just making a rule out of circumstantial evidence does not necessarily mean very much. Catherine Marshall's books were very popular and yet she was not the elected pastor and sermon writer. So?