I grew up on Macs from the System 7 to Mac OS 9 era, so this was a bit of nostalgia for me. I do think the OS was outdated even for its time. Memory protection

I grew up on Macs from the System 7 to Mac OS 9 era, so this was a bit of nostalgia for me. I do think the OS was outdated even for its time. Memory protection could be found in Windows NT, OS/2 and every Unix-like OS to my knowledge. Meanwhile, Mac OS 9 could be segfaulted by a single failure to free memory in a third-party application. Nostalgia is not enough to make you look back on that fondly. As an aside, those grey rectangles may be ugly to some but at least you had themes [1]. 15 years later, people went crazy at the addition of "Dark Mode" in OS X Yosemite. [1] https://en.wikipedia.org/wiki/Appearance_Manager https://en.wikipedia.org/wiki/Appearance_Manager