Could you share some entry points to the criticism?
"Factfulness actually employs a biased selection of variables, avoids analysis of negative trends, and does not discuss any of the serious challenges related to continual population growth. A policy based on the simplistic worldview presented in Factfulness could have serious consequences."
[1]: https://www.researchgate.net/publication/328759928_Good_Thin...
Or am I misremembering?