Exactly. I stay out of after hours for the most part. However sometimes I will jump in with the other sharks if it is just to good to pass up.
Like when the earnings came out and in the premarket GME dropped to 47. It was down like 6$ in the premarket from prior day close. The longs that stayed in that day had their threshold for pain tested.
For the most part though extended hours trading doesn't usually reflect the next day accurately.