Two reasons the worst-case scenarios for Covid-19 seem unrealistic...
[reason.com]

One of the scarier aspects of COVID-19 is that many people who are infected don't know they are carrying the virus, because the symptoms typically range from mild to nonexistent. At the same time, that fact means raw case fatality rates (CFRs), calculated based on the number of known infections, make the disease look much more lethal than it actually is. How big is the difference between the actual CFR and the CFRs suggested by the official numbers? That remains unclear, but recent research and expert estimates suggest some possibilities.