SystemD is an init system (it initializes the userspace) and takes care of managing services. Its quite an important piece of software. There are many reasons linux elitists hate it . I honestly don’t care about it as long as it successfully boots my system which it does. In fact I like the syntax for systemctl…
Obligatory I use Arch btw!
Ackhually it’s refind/Arch/linux-zen/systemd/gdm/mutter-wayland/gnome-shell