No way, we should be able to say what we want. Granted no cursing and such, that's what we have mods for. If people were 13 like there meant to be in the first place, then we wouldn't have a problem with the chat box. You can always block said person and then turn off the chat there talking in.
If you want a chat filter, then stay with WQ. Since it's meant to be played for people 12 and under.