Nice. OpenBSD does something similar, with the difference being that there are no exemptions for specific software—they expect developers to fix their broken programs.
Regarding that hobbyist OS OpenBSD, where the developers care about nothing besides security, there were no proprietary application packages available. Most retailed applications in those days ran on SunOS/Solaris or HP/UX.
I distinctly remember patching DOOM from 1.1 through 1.2, 1.4, 1.666 to 1.9
OpenBSD doesn't even have that: if you don't reboot quickly after installing a major upgrade you're going to have a bad time
whereas you can run ancient userland on more modern Linux kernels (as evidenced by the container ecosystem)
Other core components that makes up most Linux distros (e.g. libc, gtk, libc, curl, ssl etc) however do not.
that's interesting, can you share bit more details/links?
That was the joke, friend.