It is a joke? If I want to set some variable to be present for a single user (me) I surely don't want to ever touch /etc/profile or /etc/systemd/system.conf (a

It is a joke? If I want to set some variable to be present for a single user (me) I surely don't want to ever touch /etc/profile or /etc/systemd/system.conf (and I have no idea what /etc/environment is supposed to be). And even less want to change something in a bootloader. The things are surely configurable in my user home directory.