“by all rights he had a 99.9% survival rate if he got COVID...no known comorbidities, wasn’t elderly, etc.”
I suppose we’ll never know
I suppose he could have had undiagnosed heart problems or cancer, same as any of us. Don’t know if his family is planning an autopsy.
I remember years ago his talking about eating low carb. I would say he was health-conscious but not fanatical.