¶OS X's Interface Decline
Nearly every aspect of OS X looks less inspiring, beautiful, and meticulously rendered than it used to: packaging and branding, icons, buttons, switches, windows, “loading” indicators, color choices, light and shadow, and the general sense of charm and wizardry. Apple has siphoned the personality from the operating system and left it a watery husk of its former glory. Why would anyone do such a thing?
A quote in the article describes the sense of design by Steve Jobs, which I think hits the spot:
His design sensibility is sleek but not slick, and it’s playful. He embraced minimalism, which came from his Zen devotion to simplicity, but he avoided allowing that to make his products cold. They stayed fun. He’s passionate and super-serious about design, but at the same time there’s a sense of play.
— Maya Lin
The OS X (or macOS) does become cold, tasteless, and more importantly, hard to use today.