At my job, there's a thing where owners of internal systems always say "X is not a database" or "X is not a filesystem" in reference to things that anyone else

At my job, there's a thing where owners of internal systems always say "X is not a database" or "X is not a filesystem" in reference to things that anyone else would call databases or filesystems, to the point of it becoming an inside joke. I don't mind if people misuse terminology from my field (databases). Like I'm not going to stand up every time someone says "Postgres is a type of database" instead of saying "DBMS."