Any name censoring in-game is due to Valve's setting blacklist through Steam in conjunction with Destiny 2's age rating. Steam updated their blacklist checking a while ago (and it caused a major Censored Name issue in a few games, Destiny 2 included). They eventually pushed through another update to make it a little less aggressive in its detection but there are some names that may still poke their blacklist. Unfortunately, if your name is censored in-game, there's nothing Bungie can do for you. If you try to contact Steam about it, they will probably push you back here, even though it's their system causing the issue (they did this a lot back when they pushed the update that broke it for a lot of people, so it's an educated guess they'd do it again). So, with the above, you can contact Steam Support to ask about it, but if they say they can't do anything about it, then your only option is to change your name yourself to something that isn't censored.