Linux didn't aim to be an OS in the consumer sense (it is entirely an OS in an academic sense - in scientific literature OS == kernel, nothing else).The "consumer" OS is GNU/Linux or Android/Linux.
No, the academic literature makes the difference between the kernel and the OS as a whole. The OS is meant to provide hardware abstractions to both developers and the user. The Linux world shrugged and said 'okay, this is just the kernel for us, everyone else be damned'. In this view Linux is the complete outlier, because every other commercial OS comes with a full suite of user-mode libraries and applications.
systemd/Linux maybe? Lots of things are more significant than GNU, either way.
https://distrowatch.com/table.php?distribution=gnomeos
https://distrowatch.com/table.php?distribution=kdelinux
The question is if either will catch any interest and if so, what will happen to regular distributions.