The meaning isn’t the issue, it’s the way in which it can be used. We can’t allow players to use profanity because you can use it in ways that attack other players, which is absolutely not allowed in a live game environment.
Profanity being used in a game made for adults in a controlled manner is not the problem, but allowing players to use profanity can quickly devolve into a toxic and unsafe environment in chats because it can be in uncontrolled contexts.
So yeah, no swearing in chat!