yes and no... climate change is not about having +2 degrees globally, we can handle that easily even if sea rises significantly. Not even about extinction of a lot of species, which will trash some foodchains around the world.
It's more about longer perspective - some effects are cascading, and in longer uncontroleld run, we might end up with pretty much inhabitable planet (at least for mankind). Life itself will handle this easily, mass extinctions happened many times in the past for various reasons, mankind in its current level of evolution would be probably over.
