Sorry, are you suggesting that Cook doesn't use a computer in his day-to-day work, or has a Windows PC or Linux box in his office? Somehow I doubt that.
Cook is on record in 2012 as using an iPad for 80% of his work, which mostly involves communication activities such as making decisions, responding to emails, and viewing documents. With how Apple has since then differentiated iPadOS and released accessories to make the iPad more laptop like, I'd guess that percentage has only increased.
The iPad was launched in 2010 and seen as a device to play around with - a big ipod. Two years later they were in the midst of the big push for using iPads for business, in hospitals, in cafes to replace PoS, in factories, etc. So you say the CEO of Apple uses it for work, if it's good enough for him it's good enough for you. I highly doubt he doesn't use an actual computer.
> if it's good enough for him it's good enough for you
Strange argument. e.g. Warren Buffet allegedly doesn't even have a computer.
Most people don't really have a team of assistants and other subordinates extracting and processing all of the information they might need to make high level decisions. And I'm pretty sure the employees doing that are generally using actual computers rather than tablets for most stuff.
He’s a CEO with a strong C suite backing him. I doubt Tim Cook has a need for an actual computer. I struggle to think of why he’d need one to perform his job duties.
Jobs blasted folks for bad experiences, whereas I get tripped up by updates making me run through the OOBE, that doesn't contain anything, because its already set up.
The last update ran through the "connect to WiFi" process, and failed because it was already set up and connected to WiFi, but blocked everything until I managed to get through the pointless Next Next Next process. It felt like Windows in 2000.
It'd be interesting to get a new CEO that gets organically exposed to the same corner-cases roulette you play on a MBP with an actual second screen attached. After more than a decade of straying from the happy path I gave up and was bullied into clamshell mode for my own sanity.
(It's "macOS", BTW.)