You're missing the point. Poor people, the ill, infirm, etc.
Are Fucked.
The world is doing what it has done for the last billion or so years. It's evolving and changing its climate.
It was only due to climate change that we humans evolved, walked out of Africa, don't compete with Neanderthals, see sabre tooth tigers, giant sloths, megafauna, etc. Roaming the countryside.
Read this.
It's already happening now.
Water has to be the key element, assuming we don't gas ourselves to death first. Should that drop too low, crops fail people die in millions or billions? Should it rise too high, fields are swamped.
Can 7 billion survive that? NO.
Can some live off the sea? Yes, but only a select few. Which I'm sure is already being planned for the very rich and powerful.
I give it 100 years before the shit that's hitting the fan now starts to bounce back.
Now everyone can keep debating whether they will be able to afford to fill a gas guzzler, or keep the heating on.