The people who start them have no business starting or running a fire and they will throw their hands up and state their incompetence as though acknowledging it is penance or justice.
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.
It is autonomous in the sense it can continue to function without supervision after the operator has started it, in the same way countless programs on your computer are “autonomous”.
But it can never choose to begin doing something at any time of its own volition. It does not have “autonomy” like a human does.
"It doesn’t even exist until you ask it to do something", not my words
If you don’t believe in free will then nothing is autonomous.
Something like NASA's Mars rovers are considered as semi-autonomous since they do receive external instructions, but then execute those instructions autonomously without further intervention. Similarly the combination of a coding agent and the LLM it connects to would best be considered as a semi-autonomous system.
You could also have a fully autonomous robot, or just agent, powered by an LLM, where it's not taking external instructions, but rather reacting to external events in some internally proscribed way.
Humans are not autonomous: they're not even your employees until you hire them. (This is what I understand you're saying about AI.)
GP claims that it doesn't do anything until you tell it to do something. To me, this reads as GP implying that an agent won't do anything unexpected.