I’ve owned every generation of the GoPro Hero series. Sure they each receive improvements, but they have become more incremental than before. Honestly, I have no idea what GoPro is doing these days. They just had a disastrous launch with their Karma drone and the GoPro session is a total overheating failure.
I did run a side-by-side test of the GoPro Hero4 Black and Hero5 and I have to admit, they finally got it right. It might be too little too late, but they may just have saves their silicon valley asses.