As you can see in your quote, I was talking about IFR. In general - and this is a theme of the writeup BTW - we should be looking at IFR and not CFR. With IFR we can reasonably extrapolate how many deaths we'll have before new infections halt, whereas CFR is borderline impossible to use because we'd need to know how many cases we would expect per infection. At which point, why not just calculate the IFR anyway, right?
See https://www.medrxiv.org/content/10.1101/2020.03.05.20031773v...
> Adjusting for delay from confirmation-to-death, we estimated case and infection fatality ratios (CFR, IFR) for COVID-19 on the Diamond Princess ship as 2.3% (0.75%-5.3%) and 1.2% (0.38-2.7%). Comparing deaths onboard with expected deaths based on naive CFR estimates using China data, we estimate IFR and CFR in China to be 0.5% (95% CI: 0.2-1.2%) and 1.1% (95% CI: 0.3-2.4%) respectively.
You might also want to look at https://www.eurosurveillance.org/content/10.2807/1560-7917.E...