This causes a sudden release in the insulin which was already produced and stored in the pancreas.

Insulin release is usually not sudden. Before a meal or at a specific time, where you are supposed to eat something, pre-insulin secretion usually takes place. This is why we usually feel extremely hungry during breakfast, lunch and dinner, it's like a gastrointestinal programming. You were trying to prepare your body to receive foods thus the pre-insulin secretion. In fact, just by looking at foods can make our insulin being secreted.

Avoiding too much sugar/carbohydrate content in one consumption is good for the pancreas and avoiding too much fatty food is good to reduce the amount of fat being deposited in the body.

Increasing fat uptake does not equal to an increased in fat deposition. If not, how are you going to explain Keto Diet? In keto diet, people ought to take high fat, moderate protein and low carb which leads to a reduction in body fat by changing the primary fuel source from glucose to fat (ketone). Glucose is the reason why we've gained fat. You should do some reading about the topic and fatty foods are actually good for health. Well, depends on the type of fat. Sometimes, clinically, doctors would prescribed keto diet to two types of patient, patients who were having diabetes and patients who were having a seizure. Eating a lot of fat, moderate protein and low carb can really change your state of general health.