You’ll see people constantly calling the current flat UI design fad “clean”, but that word really doesn’t mean anything (it’s like music people saying “analog sounds warmer”). They might mean ”uncluttered”, but the lack of bevels & other depth cues, drop shadows, dividers, and other details aren’t clutter by default. Good design uses them all in various ways for good reasons. There was research done proving these things help, and Apple (who did some of that research) abandoned all that knowledge to go for arbitrary change, driven by the print marketing team, totally ignoring the existing UI experts already at Apple (you can thank Joni Ive).