1. People need to be aware of the science of climate change. Some of it is quite basic and has been known since the 19th century.
2. People need to be aware of the largest CO2 sources.
3. People need to be aware of human psychology and how people respond to threats. To wit, look what happened with toilet paper during the pandemic. Anybody who has spent any time studying people knew that was totally predictable - yet the people who should have known better seem to have been taken by surprise by so many people buying years' worth of toilet paper.
4. Likewise, people need to be aware of how civilization works. How have civilizations collapsed before? What were the causes of collapse? How did human psychology expedite the collapse? How did human psychology ensure the collapse couldn't be avoided?
5. Finally, what are the causes of war?
There's a high probability the "declare a victory and go home" crowd are going to be caught off-guard. Even worse, their kids and grandkids are going to take the brunt of their wishful thinking.
Global warming isn't likely to end the human race (sure, there's always the chance, but it's not likely). What's far more likely is the civilization we know today will undergo a dramatic, i.e. stressful for everyone involved, change. It may even be a change for the better (okay, now my optimism is showing!). But we're just fooling ourselves if we think the change won't have significant impacts to everyone enduring it.
There may be a light at the end of the tunnel but not everybody is going to make it through the tunnel. That's the hard reality we face.