Depression and forgetfulness are major oversimplifications as to what this poor man went through. His life was fundamentally over in almost every aspect long before his heart stopped beating. I suspect many many more had to. Insurance on films and the risk to go into production on a 100million + budget film is way too much. Marvel knew, had to, absolutely had to as possibly did many many staff on the films if he couldn’t work and had treatment, etc.
How old are you? I lost my mom too to colon cancer and I hope you aren’t young. I had a mom and then one day my parents sat my two siblings and me down and explained that she had cancer. I was 13 and within three weeks she was dead. From completely normal to jaundiced and out of her mind. Yellow eyes and green skin, that’s the last memory I have of my mom.