There are some amazing graphics here. These are images users would see very rarely: usually only on the initial installation. (A Sparkle app update would usually run for the rest of the app's lifetime.) The amount of care and polish put into something the user would see only once really shows the change in attitude around apps and UI on the Mac today.

macOS is on the surface the same. But seeing this causes a feeling of a deep gulf. How can we or Apple regain it? That special sense of value and care in the OS and its app developers?