Poor article, not even a single mention of the most likely reason for low death rate (apart from young population), the weather! Strong Sun (UV light) and high humidity quickly kills the virus. Warm countries like Thailand - despite millions of tourists from Wuhan - have low death rates. In Spain cold Madrid was affected much worse than sunnier south. Summer will soon rapidly kill of the virus in southern Europe.
Plenty of warm areas are being hit hard, but a lot of warm countries have "reporting issues" (look at the excess deaths in Jakarta for an example). Heat might lower R0 by some amount but it's still way above 1 without measures
There's also strong correlation inside the same countries regarding the more sun = less deaths vs less sun = more deaths. The best examples that I can give are Italy, where Rome and everything South of of it has ridden the pandemic wave pretty ok (with the slight exception of the region of Puglia) and Spain, where the region of Andalusia in the South has had only a 5% or so excess in the number of deaths for this year