> It's a bit like fearing magic spells in a world where nobody has demonstrated that magic exists.
I have some doubts about that analogy. Not that I entirely disagree with your point, and maybe I'm just being pedantic but... to me, "magic" pretty much by definition doesn't exist, because part of being "magic" is doing things that aren't allowed by known physical laws that govern the world we live in. IOW, magic hasn't just "not been demonstrated yet", but rather, unless we radically misunderstand the world we live in, cannot ever be demonstrated.
AGI, on the other hand, or arguably even ASI, doesn't violate any known physical laws, at least not any I'm aware of. So far we have evidence that at least human level general intelligence can be realized on top of a substrate (the human brain) that exists in the physical world. There doesn't see to be any particular reason to say that that same level of intelligence can't be realized on another substrate (stored program digital computers). Granted, it isn't known to have been done yet, but AFAIK it isn't generally considered outright impossible.