Maybe, but the scale of systemd features is humongous. It better be well documented. You don't need a user manual for hammer, you do need one for hydraulic press.
The scale is humongous? Syszemd is not one big thing. It's a collection of small things, each meticoulsouy documented and you can pick and choose.
If you still think there is only one Systemd, maybe learn about the tool instead of just talking others after their mouth.
> hydraulic press
What is there to know? It goes up and down, and don't stick your arm inside...