It does not sound like a subtle signal or warning about crossing a threshold, more like a we are already past the point of no return and now we can just sit back and watch as the apocalypse unfolds, first row seats for all recent generations.
Two things: slowdown and adaptation.
Slow CO2 emissions because every tons make it worse for +10 000yrs.
Adaptation, because infrastructures changes are slow to do and the sooner we start the sooner we can absorb damage.