The 1970 Club of Rome/MIT study and four supporting studies predicted times for the collapse of global population, food production, industrial output, and raw resources. They did not include new climate change research. This new study does.
The big thing to remember is that fewer people means less industrial output, which means less food demand. Fewer people, lower industrial output, and less food production mean less climate change-related fossil fuel-related pollution of our atmosphere. Once we significantly reduce atmospheric greenhouse gases, it will finally start reversing and lowering global temperatures, which will be a huge life and environment saver. All of which also means better conditions for the survival of any survivors post-mid-century.
Climate tipping points, feedback loops, and the primary and secondary climate change consequences will not just get a little bit worse each year. From 2025-2031, climate change consequences will radically increase in severity, frequency, and scale. Few individuals, businesses, or nations will be even remotely prepared for this radical climate consequence escalation without drastic intervention and preparation.