I agree that diabetes isn't due to high BG levels but rather to hyperinsulinemia; high BG levels are the result, not the cause. Now, as to whether the actual beta cell burnout is due to fatty pancreas, or the higher BG once the beta cells are maxed out in their ability to produce, or due to them just getting overworked and shutting down is largely irrelevant to the question of whether diabetes can be reversed. "Reversing" means "undoing"; "managing" means not doing any more damage.

The question is whether, once they have burned out, they can be restored to normal (or near normal) functioning in their ability to once again produce insulin. Even if all of the fat in the liver and pancreas is gone and has been gone for a couple of decades, will that restore the beta cells to a functioning condition? Or are they still burned out? If they are still burned out, then nothing has been reversed, you are simply living a livestyle that is consistent with the remaining reduced capacity of the pancreas. I consider that to be managing the disease.

But let me be clear. I am NOT trying to nitpick on what word they should or should not be using. I am trying to understand, regardless of what word they choose to use, what they are actually claiming when they are talking about "reversing" Type 2 diabetes.