People thought heavier-than-air flight was impossible on the basis that birds were far too complex. It ended up needing far less detail. Many orders of magnitude simpler, and orders of magnitude faster. Just because AI doesn't replicate our thinking doesn't mean it can't crush us
Passive structures and active agents are not the same thing. Viruses, nuclear weapons, bridges, and hacking risks each require different approaches. Not everything is a bell curve, surely.