The guy lived for ten years after the accident. He spent the first four or five years undergoing chelation therapy daily to remove the radioisotopes from his body tissues. At the time of his death, the dose model suggested he would have about a 12% chance of not having cancer. He didn't have cancer.

So, he rolled a 1 on an 8-sided die and didn't get cancer in that time. If he had lived longer, cancer would be a near certainty, though it still might not have been what killed him.

No. It's a case study that shows that a worst case exposure to radioactive material is not a death sentence.

Are you familiar with the term "Case study" or "Case report"? It it is a medical/other study that follows a single individual over time. These are published daily in many medical journals.

for more samples go to the villages in the 30 km zone around Chernobyl- few people refused to evacuate and still live there at the very old age. Though I doubt they were ever exposed to such high levels of radiation as mentioned in the parent.