No apparently you don’t need to replace it, if you do it just starts it as root. I can start xfce4 with startxfce4 as user but i can’t start sddm as user from console, only as root. I did try changing it to x11-(username) and just (username) it was the same as just doing x11 or not having the file, although I could also have done something wrong there.
At this point just changing the dm might be easier tbh. Although idk if that woulf actually work. I believe it starts x with the sddm user and not your actual user because, well, you’re not logged in




sorry for answering 4 days later. Idk, it says sddm supports rootless xorg, also gdm supports it by defualt sometimes ig? (lightsm doesn’t support rootless xorg)
It says that when I try to start it from the console with the file that sets the thing to x11-user otherwise o don’t remember what it says probably just that I need root to run it.