Okay, well obviously generalizations have their flaws. I wouldn't recommend anyone listening to the typical diabetic (which you obviously aren't). Or pretty much any traditional doctor! haha
My granddad had diabetes onset in mid-life. For 20 years he used insulin, then he changed doctors and this one got him off the insulin and he controlled it just by diet. He would eat an apple or pear as a dessert 1 or 2 times a day. He pretty much ate vegetables and meat, not much bread or carbs. He'd eat peanut butter crackers as a snack if he was out of the house. Bran cereal with milk in the evening. It wasn't the ultimate health food diet but overall it was pretty healthy, better than most people. He'd do a vinegar footbath every night. Not bad! He was in good health for many many more years, actually he died from complications of a knee replacement surgery he could have done without (in retrospect), not related to his diabetes.
Of his two sons, one is diabetic and the younger one pre-diabetic. They eat anything they want to, pretty much, plenty of refined carbs and desserts and junk, plus choking down tons of artificial sweeteners and artificially sweetened products. Ugghhhhhh.
I know a young 20-something man who is diabetic, he has one of those machines that is attached to him to inject the insulin everytime he eats, anyway he requested red velvet cake (the real thing) for his birthday and ate a lot. I've seen him eat dessert on numerous occasions. It's quite troubling to me.