Not when you consider that great majority of them don't speak English, which is the official language of the forum. They probably have their own forums for discussing the game where they can do it in their own language.
I would agree on chinise, but not on others.
Japans and Koreans know very well english language, but they are more confortable in JRPG rather than a typical occidental RPG: how many people there have played Baldur's Gate instead of Final Fantasy?
Portuguese players had really few games translated in the past, so this one can't be mandatory.
MULTI5 is not a standard, but is for sure the most used format in videogames industry, and yes the italian is in.
What about supporting a comunity who is here and claim for attention instead an ipotetical comunity that hides itself in non-english forums?