Our statistics show that there are not huge numbers of complaints concerning the language in which documents are provided in response to access requests. It is very rare for people to complain about not getting a document in their language.
The impediment lies more in the area of proactive disclosure. Institutions will often say that they cannot publish a document because they would have to do it in both languages, but they do not have the resources needed for translating it. That is unfortunate, because if those documents were published automatically, there would be fewer access to information requests.