He didn't say they died, just that their lung scans were terrifying. He's also talking about some specific patients he say, not a random sample.
But really the death rate is not the most important thing. Many people require intensive hospitalization, without dying. That's the big issue.
Another thing to consider is how many will be left with a life-long debilitating condition that leaves them unable to work. And yes, severe damage to the lungs counts.
Personally, I'd take hospitalization over death any day.