You don't get diabetes easily, you could get cholesterol for eating fatty or hypertension for eating salty.
Diabetes is a more of a genetic thing that if you have it, you can trigger it faster eating things with sugar. Even if you eat a pack of chocolate and biggest meal in mcdonalds everyday. You would die of embolism before your body grew intolerant to insulin.

That doesn't mean you should eat that much chocolate or drink those though, because that would cause other health problems.

Fuck I learned something.