He was a great designer with low business acumen (without Jobs).

His realm at Apple began crumbling when he executed a flawed strategy for the Apple watch launch as a fashion item, instead of a technology product geared toward health (Fitbit was 1st). It costed Apple 25M, and seemed like buying advertising from influencers (similar to 23andme launch).

I usually value this youtuber's insights, but he has recently been reaching the wrong conclusions: https://youtu.be/JUG1PlqAUJk?si=_Y87UQGdhIo92a7r&t=469