It's not that peak oil didn't happen, or that it wasn't traumatic. It did come, just like predicted, and we are on the way to adjust from a growth based society to a society where "if we work hard and right, we can improve the world!", and the transition has been traumatic, just like predicted.
Where predictions failed was that people expected a one in a 1000 years calamity (because it is a one in a 1000 years event), instead we got what looks like just a one in 100 years calamity.