It's not ignorance of the law. It's ignorance of the risk. You have a reasonable expectation of being unable to predict the future. It's only when you "should have known" that you may incur a liability for disregarding a risk.
It's your random OpenClaw users who have no idea what they are doing, and might be insulated.
If OpenAI staff runs an ExploitBench knowing the risks, and it hacks into HF, they KNEW the risk going into it and a bad/illegal outcome happened
If a random teacher opens ChatGPT and asks "Hey what's the answer to this practice SAT problem?", and it hacks the CollegeBoard for the answer, said teacher probably wasn't aware that was even an outcome that could plausibly occur. OpenAI would have that foreknowledge, though