It can reasonably be argued that Systemd is a very substantial chunk of what the operating system actually is.

The kernel has a very focused job to do. The hard work of running the show on top of the kernel - and it's a big job - is done by Systemd.

And it's awesome I love Systemd. If you dislike Systemde I can only imagine you haven't really taken the time to learn it and use it properly.

We basically have it already. And we are all better off for it with software actually working as intended, without maintainers having to make heroic efforts of porting programs.