I remember spending a good 10 minutes trying to work out how to eject a CD from a Macbook/iMac until someone explained to me that you simply drag the CD icon from the desktop to the trash can...
I’m not sure about intuitive vs unintuitive, but as a desktop windows & Linux server user, the Mac was very unfamiliar to me and took a long time to learn its quirks.
It’s just that "drag to the trashcan" gimmick was present since first Macintosh introduction keynote in 1984 and is still usable as of today so no surprise it’s the first answer on every Q/A.
I can’t yet skim through the footage but it might even appear in the 1984 LIVE DEMO (more emphasis needed) of the first Macintosh : https://youtu.be/1tQ5XwvjPmA
Ref: Intuitive = Familiar ... By Jeff Raskin