There’s no way they could have a list of names long enough to cover both “****inmyoven” and “****inmyfurnace”.
Those are four word combinations which are generally considered “more secure” (i.e. harder to guess) than passwords of 8 characters with 1 number and special character.
The “brute force” list that’d be necessary to catch all of this type of name would be millions of entries long, and it’d have to be human made because no AI is advanced enough in human language to write offensive text like this reliably.
Just report them for inappropriate name (or if you aren’t in a game with them someone else probably will), and they’ll get banned.