[imiric]

> A remnant of simpler times.

I think it has more to do with the authors and their principles, and less with the times. There are plenty of counterexamples from that era: all major browsers, the Sonique audio player (which I loved for the UI novelty), Winamp itself, etc.

> any other software that has always worked and remained pretty much the same?

mpv is in that league for me, and it's much more recent. Then, of course, there are very stable CLI and power user software that has existed for decades: Vim, Emacs, BSD and Linux coreutils, etc. Some of these are not necessarily simple under the hood, but I use them because they do one thing well (or in the case of Vim/Emacs as much as I want them to do :)), and I know that they're not going to disappear or drastically change as so many software does.