Jane Goodall: apes could be wiped out by global heating. They can't adapt to very different environments.

Humans can't be wiped out by global heating; we are good at adapting to many different environments.

What might get wiped out is technological civilization based on global trade. That is rather fragile. I expect a few hundred million humans could survive with low tech agriculture and fishing, once 6 to 9 billion have died.

Heating won't make solar power stop working, and won't make computers stop working. But the wars it stimulates can destroy the globalize manufacturing system, so that solar cells and computers can't be replaced when they break.