The claim made by the author is that IFR is 0.23, 500k are dead therefore 200m have had it. On the other hand if IFR were 0.69 then the picture would be rather

The claim made by the author is that IFR is 0.23, 500k are dead therefore 200m have had it. On the other hand if IFR were 0.69 then the picture would be rather different - 73m. Some estimates (https://www.imperial.ac.uk/news/207273/covid-19-deaths-infection-fatality-ratio-about/ https://www.imperial.ac.uk/news/207273/covid-19-deaths-infec...) put IFR as high as 1.79 which would mean 30m infected so far.