Adding my two cents: I have no idea what the cost would be in terms of labor, time and resources, but I think that localized-from-the-English-language software should have a toggle (some “hot key”) to temporarily change the interface to English, so that one using a non-English version can quickly see what that menu item is in English. Then going to a forum or help function that is all in English would at least be possible.
In fact, I’ve wished for bi-lingual interfaces, but I guess that’d be a nightmare to make the text fit.
(Adapted from my post from Lost in Translation - Dorico - Steinberg Forums)