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.
From the article: "Yet others talk about the possibilities of the presence of a less virulent strain of the virus in India, along with the possibility that its hot weather was diminishing the contagion. Both these claims are not backed by any evidence."
There is evidence for the weather claim, but it's complicated by other factors.
Multiple studies [1] have observed a correlation between weather/UV and severity of outbreak.
Wuhan, Milan, Madrid, Qom, UK, Korea and Northern USA have all fit a comparable weather profile during their outbreaks.
The problem is that this virus seems to be more durable/resilient than other seasonal viruses (flu, common cold), and even in hot climates, many people still spend a lot of time congregated in air conditioned office/residential buildings, shopping centres, public transportation systems, etc.
So it's true that hot weather alone is not enough to end an outbreak.
But it can reduce the extent/severity, and the observed evidence seems to bear that out.
[1] https://www.ft.com/content/c8ed3692-6db3-11ea-9bca-bf503995c...