>but in general they are NOT intelligent enough to be given an order like 'under no circumstances ever do X' in such a way that they can not be 'jailbroken' into breaking that rule.
I don't think this is really a question of being intelligent enough. Nevermind that people sometimes abuse this fact, Really what rule can never be broken under any circumstances?
For example, the very first time i heard about the famous Paperclip maximiser problem, while i did agree with the general, "what we optimize for isn’t necessarily what we get" message, for the specifics presented, i couldn't help but think, "Well that just sounds like a dumb robot".
What kind of general intelligence wouldn't understand that its creator race wouldn't want to be killed in the pursuit of some goal ?
Certainly a GPT-X Super Intelligence could still off humanity but at least we can be rest assured it wouldn't do it following some goal to monkey paw specificity.
It's possible such ruthless, goal driven intelligence exists or can be created but i don't think that aspect of its intelligence has anything to do with the level of it.