Well, that could be a factor, but even so, the IFR is 1/100th of the best estimates in Europe and the US.
That’s a huge gap, which might be explained away by multiple factors, but could also be evidence of something real. And if it’s real, it’s a huge effect.
I still think that HCQ is a part of the explanation for the super-low IFR observed so far in Africa.
The life expectancy is much lower. Younger population and many of the weaker have been weeded out.