CO2 is an important greenhouse gas, but not the only one, and certainly not the most potent, PPM-wise. As a proxy for the overall situation, it's acceptable, but relying solely on CO2 concentrations invites all manner of problems at the margin to go unnoticed.
We also crossed the threshold for "beyond anything humans have experienced" for CO2 several exits ago. Claiming this is suddenly news is disingenuous, and you want some excellent geologists on your team before claiming "faster than ever."
Like, yeah, we're fucked, but this is not great reporting in terms of explaining why and what it means.