will disproportionately impact the societies least prepared to cope with it.This is the point. Those societies least prepared, have traditionally been impacted by these events disproportionate to all others see: Katrina, Galveston, Luzon, Florida etc.... They won't become prepared without additional energy expenditure significantly beyond what they have now. They have to determine what that costs and "clean" energy production is significantly more expensive than "dirty" production currently. Or, they could decide not to build on the beach or in a flood plain.
If we can get to more clean fuels or nuclear that is cheap and plentiful, then great! It doesn't seem to be happening though and until it does, the only way to move communities up the quality of life scale is dirty.
That doesn't me we should give up or not try to build better sources of energy or more efficient distribution methods (so we don't lose 60% of production), on the contrary, we should. Lets be real though when trying to balance global mobility.
And by the way, saying that climate change is going to turn the earth into Mars is as hyperbolic and fantasy as saying that Climate Change is not happening and a conspiracy.