I'm not saying he was right to experiment with diet. I was just saying it's hardly surprising given what we do know about pancreatic treatments and the dearth of public and accessible information.
Much of the information out there is either garbage or medical research papers. Most information on any pancreatic illness involves diet/digestion and potential surgery.
This stuff has been on my radar because unfortunately severe cases of pancreatitis can precede chronic conditions[0], cysts, tumours, and potentially even pancreatic cancer.
Jobs seems to have had a liver transplant. That says a couple of things. If the cancer had spread to his liver his chances were not good. His cancer was of the islet cells. Islet cells are the part of the pancreas that regulate blood sugar levels. So immediately he was staring down diabetes with surgery and removal of a large portion of them. There are surgeries (we've looked at them as possible futures) to transplant islet cells to the liver in order to try and avoid becoming diabetic if part or all of the pancreas has to be removed.
So this is a completely uneducated guess and only speculation, but if he was looking into islet cell transplants[1] prior to pancreatic head removal then he may have wanted a healthy liver first. Information relating to those details hasn't been made public to my knowledge. Most of the information surrounding his health seems as if it was measured in its releases. Also that he had a Whipple procedure it sounds like he was also having more traditional treatments.[2] Diet is also a part of treatment and symptom management and, from personal experience, the diet is pretty well the same as that for pancreatitis.[3]
Being that he lived 7 years after what is publicly known to be his diagnosis, he beat the average by a couple of years. That puts him in the 90th percentile of all pancreatic cancer deaths (at least according to the present figures I mentioned before which don't differentiate between types of pancreatic cancer).
[0] https://pancreasfoundation.org/patient-information/pancreati...
[1] https://www.niddk.nih.gov/health-information/diabetes/overvi...
[2] https://pancreasfoundation.org/patient-information/pancreati...
[3] https://pancreaticcancercanada.ca/diet-nutrition/