[systemd-devel] service runs - but it's not really there

[lejeczek]

Hi guys

This absolutely boggled my mind, my brain exploded, but go 
easy on me as I ain't an expert.
I have, meaning the "root" but other users too, _NO_ 
"~/.config/systemd" - thus, how I understand it, no service 
definitions which are user-made, yet this..

● user at 0.service - User Manager for UID 0
    Loaded: loaded (/usr/lib/systemd/system/user at .service; 
static; vendor preset: disabled)
    Active: active (running) since Thu 2021-01-28 17:13:01 
GMT; 2h 34min ago
  Main PID: 854314 (systemd)
    Status: "Startup finished in 44ms."
     Tasks: 35
    Memory: 69.3M
    CGroup: /user.slice/user-0.slice/user at 0.service
            ├─init.scope
            │ ├─854314 /usr/lib/systemd/systemd --user
            │ └─854319 (sd-pam)
            └─syncthing.service

exists and gets auto started by "systemd" without any asking 
really.
This is really very bad, no?
What am I missing here?
many thanks, L.