GoPro Hero8 Black review: Have action cameras finally hit a wall?

Have action cameras reached peak performance? I remember GoPro in the early days. Back then the cameras could only offer sub-SD recording, had no Wi-Fi and more importantly no way to see the picture as they lacked a screen. They were a hard sell, but filled a gap for small disposable digital video cameras. The launch of the Hero 8 Black brings some improvements over the previous generation, but is it enough? If you already have an action camera does the quality and feature set of the Hero 8 Blac...