I talked to support127 about changing the name, giving them all the details I knew on it. It was stolen right before the merge from player Hezhibing on s85, with assistance from JamesBeast. Support then replies that the name is indeed not inappropriate and therefore cannot be changed. I replied saying I wouldn't want my kids to see that if they were playing this game and requesting again for it to be changed, and I have not heard since.
But guess what is also weird- we aren't allowed to say that name in world chat! it's filtered, and if we say it over and over we get muted by the local experts! So if it's allowed as a sub name and deemed appropriate, why is it filtered in chat?