ELI5. There is only 6% death rate on deaths solely attributed to COVID-19?
Comorbidity is way higher.
So? In order for that to be even remotely useful you'd have to first show what percentage of the general population has no comorbidities with COVID-19 in the first place.
Even then it tells you very little about how concerning the disease would be for a healthy person without comorbidities. Consider the following hypothetical to understand why.
Presume there was a disease that killed 10% of people who are healthy and 90% of people with comorbidities, and those comorbidities were common. The end result would be the percentage of people who died and had no comorbidities out of everyone who died from the disease would be very low despite the fact that the percentage of healthy people who die overall from it is still very high.