For whatever it's worth, macOS/OS X has had very high resolution icons well before high DPI displays were commonly available. Even 10.0 which was released in 20

For whatever it's worth, macOS/OS X has had very high resolution icons well before high DPI displays were commonly available. Even 10.0 which was released in 2001 supported 128x128 icons, which was 4x larger than what other popular desktops were capable of at the time and enabled far greater levels of detail, even if most users wouldn't be seeing that detail most of the time.