English #Wikipedia in Russian" was why technical support was sought on IRC. Technically it is doable to retrieve a label from Wikidata in any language if it exists.
Consider the use case: when something changes for a subject in a specific language, you get to know what changes there are so that you can comment on it or improve the corresponding article in your language.
When you learned things have changed, you want to read the article, the changes. This is where Google translate really helps. It allows you to understand what is new. It even helps you to express your opinion for on the talk page. A tool like this will increase the number of people who are interested in the points of view on a subject expressed in the many languages of Wikipedia.