That article, while interesting, doesn't seem to actually support your position from above (~~ high protein = diabetes).
It basically says,
"With respect to insulin sensitivity, diets enriched in saturated fats can induce insulin resistance, whereas fat substitution with monounsaturated fats can enhance insulin sensitivity. Therefore, in assessing the safety of high-fat diets, it is important to control for the composition of ingested fat. High-fiber, high-carbohydrate diets comprised of foods with low caloric density can similarly be used for effective weight reduction and to ameliorate insulin resistance. Although some data suggest that low-GI diets are most advantageous in this regard, these effects may have more to do with increments in dietary fiber than differences in available carbohydrates."
So, eat avocados and walnuts, not bacon and slim jims.