Conversely, if there's a chat log of me saying "Buy a ticket to China" and then clicking "yes" on an approval prompt showing the full price, ticket dates, etc. then yeah, obviously that one is on me.
If HF did have any hard feelings about the event, they were likely settled with OpenAI out-of-court.
That's not settled law.
Which is why corporations like these don't want to run the risk.