Yes, we agree about fault and blame. (I say "probably" only because I believe somebody might yet change my mind about this. It's a new field, after all.)

What I disagree with is "don't do anything until you ask it to." At least, the implication to me here is "don't do anything except what you ask it to." I infer that you mean this because you say "...and it suddenly decided to book you a hotel room?" Indeed, an LLM (in a harness you started) very well might suddenly decide to book you a hotel room, even if you didn't ask it to do anything like that.