Actually asking ChatGPT this query led it giving me this UUID "550e8400-e29b-41d4-a716-446655440000" which happens to be a very common example UUID
Actually, asking this multiple times to ChatGPT gives me different UUIDs every time, and it checked with a web search that they are not found in public data.
The LLM is mechanistically unable to pick something actually random and outside of its training distribution, so... yep.