My point was there is no systemd software. Systemd is a project naming convention with many projects under its umbrella that do not rely on each other in any way.

It's sort of like saying KDE is a whole thing because it has a text editor. Uh, no - KDE is a project, Kate is a text editor part of the k applications suite, which has nothing to do with plasma, the desktop shell. You can use Kate on any shell. You can use plasma without Kate.