Steve Jobs was diagnosed, by his doctor, relatively early, as pancreatic cancer diagnoses go (many people only discover it when they have weeks or months to live, and there are no effective treatment options...five year survival rate for pancreatic cancer is something like 1 in 5). Jobs opted to use alternative treatments rather than treatments that (might) work.

That's a wholly different conversation...nobody diagnosed his condition, or could have helped his outcome, by looking at him and talking about his health on the internet. And, nobody could have diagnosed his condition by looking at him. By the time you have visible symptoms of pancreatic cancer, you've already likely been experiencing pain and other related symptoms, and treatment options are practically nil.

How about we just leave people's health between them and their healthcare providers and optionally their family? It's none of our business, unless they specifically ask us for advice or tell us about it.