If 3rd world countries collapse, everywhere else does too. The lives of the wealthy first world folks is completely reliant on cheap labour and slavery in poorer countries. Without that, everything wealthier countries rely on completely collapses too. Welcome to globalised capitalism; a vast slave system.

There’s no corner of the globe you can run away to and be safe from the ensuing political and economic instability. Most likely this instability leads to large scale warfare that puts our risk of nuclear war way way up there too. Perfect storm

I don’t really see human civilisation lasting long under that scenario which is why tackling the lions share of carbon in the 2020s, before it snowballs and becomes an order of magnitude harder, is crucial