Init is just one process, 98% of systemd is its logind, or its isolated fork called elogind, and its multilayered dbus labyrinth, which all those mentioned use. Running gnome and its applications without it is nearly impossible @Rustmilian
The one article almost literally says if you don't like systemd go to F**BSD and away from linux!
But yes, there are those irrelevant 3 mentions in a site as old as systemd itself.