I have 20/20 vision and I had to turn on contrast and button shapes, the new design is so bland and unreadable.
Macs have large screens and that's why... they changed all dialogs to be tall narrow boxes with center-aligned text?
Properly labeled color-differentiated icons are now indistinguishable grays crowding the title bar removing all affordances (from being recognizable to being able where you can drag the window).
Keyboard access is being removed or broken across all first-party apps.
Desktop metaphors like multiple columns, tabs etc. are removed in favor of tall narrow strips of gray text that surely look great on a screen that fits your palm. But that's not the screen Mac OS operates on.
The new designs break Apple's own HIGs and other recommendations like WCAG.
So please tell me what it is you like about new designs and, more importantly, what the hell is their purpose?