The article keeps calling this a "cure" to diabetes. If anything, it's a cure to the "never feeling full" sensation that leads some (usually mildly autistic) people to constantly eat. And this constant overeating is what leads to the diabetes.
Having known people who had gastric bypasses, it's far from a miracle cure. The procedure causes many issues, from intestinal discomfort to life-threatening complications. Treating the procedure with such rose-colored glasses could be considered harmful.
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Part of the reason nobody wants to pay for it is it costs as much as a Model 3:
> The estimated average cost of bariatric surgery is around $15,000, according to a 2017 review. But even these estimates might be underselling it. Benari recalls that his surgery, with expenses before and afterward, was about $35,000 without insurance. The price tag kept him from pursuing the procedure for almost a decade.
And an interesting reaction - the person briefly considered gaining 40 pounds, but instead of considering losing 40 pounds, they guilt-tripped their employer into paying for it.
> “Obviously I couldn’t gain 40 pounds so I could get surgery—that’d be suicidal. I just held off, trying to not think about it,” he said. “Eventually, through a lot of back and forth, nagging and whining, I convinced [Microsoft’s] HR department to overhaul their policy and allow people in my situation to get the surgery done.”