While I don't agree with this, Microsoft or Sony actually has the right to censor names, Bungie could too but it's unlikely since they cannot control user names. If you're asking how these companies can censor names it is because they are private, meaning not government run. Freedom of speech is only limited to public places, but with that being said, you can't be arrested (unless you yell I'm going to bomb this place at an airport- which I highly recommend you try- you know- YOLO) because police is government oriented. An example of something along these lines is the homosexual Boy Scout leader who was banned and had all his accomplishments such as his Eagle Scout title stripped from him- just for being homosexual. How could they do this? Well, in this specific case, the Supreme Court ruled that it's a private organization who can orchestrate their own rules within their group as long as they align with federal law. So this is possible but regardless of where you or your child goes (unless you/or your kids plan to stay at home for life with no outside connections) there will always be profanity and vulgar words/action in the world around you. It's just day and age we live in now. You and/or your kids will just have to get use to it, I'm sorry. Wish i could give you a better answer but honesty before lies- rule one to parenting- haha not.