But "knowing best" could be a problem anyway.
And I expect that if we spend a few more minutes we can think of other ways for the situation to go "oops". Oh here is one: two humans / human entities conflicting on giving instructions. Machine soon enough "on its own".
So that I don't think "more specific alignment" can cut it - if we posit a super-human AGI with ways to act on the world. It would have to be more fundamental. Because of the issue that - at some point - one oops is not recoverable. Three laws or something? Heh.
And I don't know that "more intelligent" is necessary. I can see plenty of mirth coming from an amateur or hacker / techies group or less responsible country (hah!) using whatever commercial offer to bake their own agent. What's harder? The core. Hooking up the core to a wallet, internet access, a robo-signing staff - and working around the fine print of the core vendor - that might be much easier than what OpenAI and friends are trying to do. Do they also create their own reward function and alignment in there? Yes. That's part of the fun. That's the point. Do they get it right? Maybe, maybe not.