I fundamentally disagree with that last statement, this thing is growing fast, and it takes time for people to die, it does not kill instantly, people tend to linger for a while before they die, so most of the deaths we have seen are from people that got sick 2 weeks ago.
The numbers I am seeing when looking at hot spots like New Orleans, are 80% recover at home, but may feel really bad for a week or so. 20% need hospitalization which is primarily supportive care plus supplemental Oxygen, and of those that are hospitalized, about 25% end up on a ventilator, with about 30-50% of those eventually dying. The numbers get much worse when you look at older people, for those over 70, 50% end up in the hospital on Oxygen, 30-40% of those then end up on ventilators, of which 50% die.
If the hospitals fill up, then we may be looking at 20% death rate for those that can't get Oxygen, etc.