Just to be clear - as per https://wiki.openstreetmap.org/wiki/Verifiability , all data in OSM needs to be verifiable.  There are a couple of examples around the world where one language has multiple ways of writing it (see https://wiki.openstreetmap.org/wiki/Names#Transliteration for examples).
However, generally speaking, transliteration and translation should be avoided.  If there really is a sign in a certain language, or some other licence-compatible way of verifying that name, then it makes sense for a place to have multiple languages.  If there isn't, it doesn't.
As an example, it wouldn't surprise me if there was a verifiable Unkrainian name for https://www.openstreetmap.org/relation/1644131 , but I'd be very surprised if all of the examples that were recently changed were verifiable.
That said, that doesn't mean that the actual name:uk in this changeset are correct.  The one used for https://osm.mapki.com/history/relation/1644131 was the same as was added in https://osm.org/changeset/135670474 by someone whose work was (in the Ukrainian forum) notorious for its poor quality.
-- Andy, from OSM's Data Working Group
