Haiku looked amazing and beautiful in 2009 when I first learned about it. Today it looks dated like Windows 95.
Disagree strongly. I find its appearance 10X more visually appealing than any modern UI (win/mac/kde/etc). They’re all incredibly wasteful of space and chunky. Also, designers ruined OSX by making it flat and joyless.
And I hate auto-hiding, narrow scrollbars so much. Scrollbars have exactly two purposes: show the scroll progress and allow faster scrolling than with the wheel/gesture. Both are effectively prevented by it going invisible.
There was a time when I found the Windows 98 UI a bit "old", but honestly in the long run it aged better than almost everything that came after.