I have a feeling that's partially due to how much money a lot of those people (and Apple shareholders) have made under Cook's leadership. The growth has been nothing short of incredible. IIRC Apple shares have grown like 8x or 9x under him (when accounting for inflation).
That said, Apple products no longer really have that magic that they had under Jobs (IMO). That could be because they focus now on processes and operations much more than creative technologies. Besides the watch (which was a natural continuation/evolution after the creation of the iPhone), I can't really think of projects created and developed under Cook that are game-changers or come from left field.
Process people are great in times where you need to focus on doing the same thing, day in day out...or improve on those same things. In other words, operational execution. However, don't ever trust a process person to do any creative or abstract thinking - it's impossible for them. They have tremendous value for certain types of companies at certain key phases of growth. They are "how" people, not "why" people...and certainly not "what if" people.