Do you mean to say that it is not actually possible for users to copy the gedit settings, but only systems administrators? I thought most sys admins used vim or emacs? What would they be doing with gedit, the simplest, most user-friendly (aside from settings) text editor known to humankind?
The settings are stored with GSettings, usually with the dconf backend
on GNU/Linux.
I'm not sure all this amounts to anything simpler than manually recreating all gedit's settings.
Here's an idea:
Tools > Settings > Import / Export
That way, the user wouldn't have to concern themselves with the complexities of gedit's haphazardly-evolved settings.
And assuming that a user might need to import gedit settings that have not previously been exported: the import option could allow you to simply point it at a home folder and leave it to get on with harvesting the settings from the many possible locations in which they may or may not have been distributed.