Profanity filters on single-player games are just so... incredibly performative. They don't 'protect' the player from seeing the word (you have to type it in order to activate the filter), the only thing they do is scold the player.
My favorite solution to people who get offended at the things they themselves typed is a disclaimer on a puzzle page that said "If you type profanity you will see it."
Out: Can you pet the dog?
In: Can you name yourself Fuckface McShitass?
It's really funny and jarring when you encounter a profanity filter in a single-player m-rated grown-up game for adults, but I don't think they even make sense in kid's games. If anything I think "If you tell the computer to call you FuckNugget it will do that" is exactly the sort of obvious, low-stakes 'actions have consequences' lesson that's perfect for kids.
"This impacts nobody but yourself, and even then it does not alter gameplay or the intended experience, however we cannot allow it and you need to know we disapprove of offensive language. Anyway have fun in Gorequest 4: The Tittening."
more games could benefit from brutal legend's profanity filter setting I think
