First, I find they did not explain their model well. Extraordinary claims require extraordinary evidence.
Second, the correlation does not imply causation or whether extrapolations are solid. It looks like there might be mistakes on that front and there are many spurious correlations (e.g. high energy in the past might mean high unemployment).
Third, so far the country experiencing freezing is the Ukraine due to power outages. Just one sentence mentioning, whether in Ukraine for sure many people are going to die due to distrusted power, heating or water supplies.
So far on general economics, I love: https://noahpinion.substack.com/
Though, it is hard for me to find comprehensive Economist replacement.