LOL. That's like saying, "If you don't go outside on a rainy day, you may not get wet."
I'm not debating anything that the doctors say, but it just seems too obvious that if you eat a mostly plant-based diet, you're going to take in less fat, less simple carbs, and less calories. That should mean less fat on your body, which I believe is the key to preventing/reversing/controlling T2 diabetes. Get your weight under control, by what ever means works for you. One size does not fit all. Genetics play a big role, as well. My dad was fairly heavy, ate all kinds of crap, and even in his 80's had steady blood sugar levels. My mother didn't get T2 until she was over retirement age, and easily controlled it with oral medication and diet alone, same as my wife.