I'm still considering implications.
Note the documentation recommends Users create their own vimrc in their home folder (makes sense) instead of modifying any system-wide vim settings,
But unlike most settings made this way, the User must keep in mind that any custom creation of a non-default vimrc does not append to the default system-wide settings... The new vimrc replaces and wipes out whatever are the default settings.

Therefor, if the User merely wants to modify and not replace system settings, the default settings wherever they may be must be copied into the custom vimrc.

This behavior has always existed, but I would think unexpected.
Perhaps more of a reason not to give Users reason to modify and provide a full featured vim if there is hardly any difference in resource usage.