If it's super bad, or if the entire profile is bad that's different, but if it's just one word or it's not massively bad, please do ask the player to alter/remove it themselves.
I know it's a pain sometimes, but it saves a lot of "Mod hatred." Down the road, for some of the players anyway. *laughing out loud!* :)
You can always tell them to Google COPPA Federal laws and regulations for some of the profiles, that usually gets them as they realize it's not just this game being picky. It's that we have to follow Federal laws and regulations.
COPPA: Children's Online Privacy Protection Agency. It's Federal and is under/associated with the Federal Trade Commission (FTC.) The FTC is what regulates online gaming.