Dear wakman,
You should not be surprised at your DSN's advice, it is the official line of the establishment. Not withstanding the comments of all the other good people that have responded to your question, it's even more simple than good diets etc. I am primarily a controlled carber meaning that I eat sufficient carbs so that my blood sugar targets are achieved. It is just that after 15 years and consequent loss of beta-cell function, controlling my blood sugar levels means low carbohydrate. For newly diagnosed type 2s achieving control could well mean eating much more carbs than I do. It is a matter of testing and adjusting the carb intake to achieve your goals. I too have a varied diet that is healthy but it just means that I eat a lot more fat and protein. Eating fat, particularly saturated fat is not bad for you, how could it be - we as a species have been eating it for millions of years. So, to sum up, if you wish to control your carbs, by carb counting, to achieve your BS targets that's up to you, but don't expect any help from the establishment.
Warmest Regards Dodger - just back from holiday