OS 9 and before emphasized discoverability:
https://i.stack.imgur.com/bdY7i.jpg
Sometime at or after OS X, the industry pivoted to surprise and delight instead, and so did Apple. (Not sure who pioneered it.)
This feeds in well with the whole "cult of apple" thing, since to use the laptop / phone, you have to get other users to show you cool non-discoverable tricks. Take this article explaining basic functionality in Finder for example:
https://www.lifewire.com/use-mac-finder-2260739
I've been using OS X for about 10 years, and didn't know half that stuff.
Instead, I know just enough Mac OS CLI to know to avoid macports and brew, and to instead use a hypervisor or ssh to a machine with a reasonable filesystem layout.
Here's an article plugging surprise and delight. I'm not a fan, so I'm not going to try to enumerate its purported advantages:
https://medium.com/@davidporretta/surprise-and-delight-in-ux...
(Begrudgingly sent from an apple device.)