I wonder how our ancestors made it through the early Holocene, where it was 2-3C warmer, with just stone age technology?
Oh, humans, as a species, will survive. I don't think the race is in danger of dying out. Our way of life? Billions of lives? Yea, those are in danger.
In all seriousness, if you assume the next 200 years looks anything like the last 200 years there is no forecast of the future that doesn't include billions of lives being lost and changes to people's way of life. But climate change doesn't need to be invoked; just the ongoing rise in population and the depletion of fossil fuels.
COVID-19 is the current reminder that that there are much bigger risks out there than climate.