This could be a significant shift/understanding of the causes of Type2 diabetes.
It reminds me of the discovery, by the Australian Barry Marshall, of Heliobacter pylori bacteria which causes things such as gastritis and gastric ulcers and duodenal ulcers and other peptic ulcers and can lead to stomach cancer. My uncle had gastric ulcers most of his life and died of stomach cancer. A simple dose of antibiotics may have saved his life.
Worryingly, there was strong opposition by drug companies who sold anti-ulcer drugs by the bucket full, and it took a long time before it was accepted as a cause of stomach cancer.