It was a desperate kludge to warrant fallback localization
for cases when livecd-setlocale failed to work out properly;
"thanks" to systemd paralizing startup the order was chaotic,
see #28991 for some details.

Now that livecd-setlocale >= 0.3.1 looks like working this
should be dropped for good.

And the proper preset solution will be l10n feature.
That one requires part of alterator-sysconfig backend
factored out into a standalone package along with its data.