I think it's interesting to consider the scenario that humans are not causing the climate to change, but it is changing catastrophically nonetheless. How is our strategy different? Is it at all?

Well lets say natural global warming will cause a rise of 5°C in the next 50 years. Then we have 50 years to adapt. But when we accelerate this change we might need to adapt in 5 years. And we might even cause a rise of 6°C instead of 5. I believe those are the big problems we are facing.

I think in that case we would focus on ways to cope with climate change. For example, air conditionning everywhere would make sense. What's difficult about the current crisis is that you can't use too much energy to fight it without making it worse.

Please elaborate how air conditioning is going to prevent a destabilization of democracy around the world as millions of climate refugees run out of places to flee too?