I’ve worked in many fields during my career. Previously, a changing environment would be the main contribution to a human populations rose and fall. Then we got big brains and technology. Now, it’s always human error and unintended consequences of our technological innovation.
We always manage to move the catastrophic goalposts (nuclear).
So, putting a timeline on it is puts one on tenuous ground.
You can say we will have noone to blame or credit for the outcome except ourselves.
Best you can say is it will turn society on its head.