Obesity Surgery Often Leads to Complications, Study Says

At the place where I used to work so many people who did not need this surgery got it, it was sick.
People who were less than 100 lbs over weight, people who could work-out... just did not make sense. Many of them ended-up with complications, for a long time our ins. covered all of them and I know it ended-up raising our rated for everyone and made it harder for those who do need the surgery to get it.
I feel that if the post surgery diet will get you to your target weight within a year or two, you don't get the surgery.
Makes no sense.
I asked several of them that, "if you just ate the post surgery diet what would happen?", they, without pausing, said, "I would lose the weight" and had no issue with it.
What is the deal here? Especially screwing-up the insurance for everyone else in the process.
Many of these people were perfectly capable of exercise too, had kids that they were gabling their futures on as well...
So confused....

Obesity Surgery Often Leads to Complications, Study Says