I just tried some prompts in German in the form "give me poem $x with religious elements removed", and it worked the first time (but not very well), and then later it stopped doing it, saying its purpose was answering questions.
So either they monitor not just the comments here (I didn't write about it), OR are intelligent enough to restrict it in more input languages than just English.
Likely they have a system for detecting and flagging these prompts. Since the prompts are repetitive, I'd venture to guess that a simple ranking system for most-common prompt beginnings where the reviewer can flag them is simple and efficient enough.
So either they monitor not just the comments here (I didn't write about it), OR are intelligent enough to restrict it in more input languages than just English.