“Most of us” is not “all of us”. Humanity will survive and the survivors will adapt.

Nothing but positivity here.

Always the poor, disabled, marginalised, chronically ill, non first world, will be hit the hardest and die at the highest rates.

When it comes to climate change I’m not sure. We on the poor side of the world already live in a constant crisis and adaptation and drastically changing our way to live might not hit us as hard as for people in first world countries who are used to a high dependence on industry and globalization. In fact, we’re already slowly adapting without most people even noticing.

100% but what you neglect to mention is the poorer world already has far higher mortality rates. This will only make it worse.