Of course they're misleading. What did the doctor tell us when my mom was diagnosed? Don't do research, do not trust Dr. Google, Dr. Google lies. At best, Dr. Google is behind the times.
The specifics of your case will strongly affect what happens to you. And even for cancers that are a guaranteed death sentence, survival has increased significantly in recent years.
Only life itself carries a "guaranteed death sentence".
You tell that to everybody with a glioblastoma.
Go ahead, tell them the aggressive mass in their brain, the thing that shortened whatever potential life expectancy they had to, at best, single digit years, isn’t a guaranteed death sentence.
They’ll be so comforted by the idea that maybe their already shortened life expectancy will be further reduced by a car accident or some idiot with a knife.
Perfect example. I myself survived a grade 4 GBMO. "5-year survival rate: 10%, median life expectancy: 18 months." That was 13 years ago next month.
Your idea that hope is going to lead to a car crash? or murder by knife? is one of the most bizarre and ridiculous things I've ever read.