Like with anything, it's best not to get too revved up over the hype and wait until there are actual cameras around to check out. GoPro are, of course, hiring professionals and cherry picking the very best footage/images that any of them captured.
Otherwise, the concept of using an action camera ASIC in a cinema camera isn't new - it was exactly the strategy with the Z Cam E1. Since then, action cameras have advanced a lot, thankfully. Similarly, the Z Cam E2 series used/uses an off the shelf Hisense board, though that one was intended for higher-end security cams/consumer cameras and not action cameras.