Unless the theme were "elite former runners who died very young from heart attack", it's silly to consider how former elites die. By the age of 55 or so, people start to die. Heart disease, stroke, cancer, things start to happen.
The thing anybody would care about is whether runners died younger than they would have otherwise, which is to ask whether running is correlated with damage to the heart, which is to generate fear about the health of the running that is the focus of this forum.
The healthiness of running is beside the point for most of us. I have run so many miles for so many years that it has become deeply ingrained as an important part of my lifestyle. If I knew for a fact that it was taking years off of my life, I'm not sure I'd change a thing. Even accounting for damage to the heart and vascular system, how does one know that not running would bring another chain of physiological changes that would be as damaging, if not more so?
In the cases of elites who died young, it's very difficult to say what would their outcomes have been if they didn't run. In the end, I'd rather run and enjoy my time than not.