Fedora – How to turn off GNOME hint bubbles

What you mean by GNOME auto starting is, most likely, actually gdm (GNOME Display Manager) which provides the login screen. Just disable the service to stop it from autostarting. Arch uses systemd, so you want to do:

# systemctl disable gdm

Reboot and gdm won't automatically start. You can then manually start it whenever you want with:

# systemctl start gdm

It has to be [''] instead of [] - Thanks and reference to the user zdenek from the ask fedora platform who helped me to figure it out and find the solution : How to make app folders settings permanent?
The command is : gsettings set org.gnome.desktop.app-folders folder-children ['']