The planet will be fine. Humanity in general tends to act so self-important. We're just specs of dust on a bigger spec of dust. There have been at least 5 mass extinction events, and there's going to be more.
A large-enough CME would cripple the entire planet for decades (if not centuries). From an existential standpoint, global warming is the least of our worries as a species.
No one is concerned that the inanimate object we call "Earth" is going to be harmed or that the Earth itself has an opinion on what's happening. We are worried about present and future inhabitants, including ourselves. It should not need to be said. Citation needed on the least existential threat claim.
A large-enough CME would cripple the entire planet for decades (if not centuries). From an existential standpoint, global warming is the least of our worries as a species.