User blog comment:Jkphantom9/OFFICIAL: Japanese Cast Announcement!/@comment-4010415-20150612040850/@comment-4010415-20150612122005

Because some people honestly don't know that RWBY isn't from Japan, and some weeaboos/anime purists might get upset if they watch the Japanese dub, praise it as amazing Japanese artwork, and then discover it was made in icky America.