99% of the cases that last for months, like Nick Cordero, are from the early days of the pandemic where doctors mistakenly put people who didn't need mechanical respiration on ventilators, damaging healthy lungs and causing breathing dependence that doctors found difficult/impossible to wean from and all sorts of other complications, such as deep vein thrombosis (again, see Cordero's case).

The mean time between symptoms and death is two weeks (https://www.cdc.gov/coronavirus/2019-ncov/hcp/planning-scena...). Anyone with symptoms is in two weeks, three at the most, either going to be at home wondering what the fuss is about—the vast, vast, vast majority of cases—or dead.