I don't think humanity is doomed. What I do see happening is a lot of areas that are landlocked becoming wayyyyyyy too expensive for normies to live in. You'll see the coasts become stupid expensive to live as domestic climate refugees roll in. You'll see tensions between locals and newcomers. And you'll see it on the macroscopic scale with wars and tensions over resources like water rights, jobs, immigration, and racial tensions. You'll see the rise of idiotic nationalism and people waving their country flag as justification for the "good old days".

We'll make it halfway, but we will still see devastating climate events often. Big floods, big drought, big hurricanes, skyrocketing insurance, weird stock issues on certain things like some medications, olive oil, cotton, etc. Humanity will be distracted by some of the dumbest shit imaginable while the grownups (scientists) try to focus on drawing down carbon to stay on target.

Luckily humans are very adaptable. History will judge companies like BP and standard oil harshly though, for basically fucking up the planet for centuries.