The necessary IQ for destroying the world is dropping. Op does not say it's low enough today, but that will probably come sometime. Denying the possible harm these tools are capable of doesn't help.
In any case, how would AI regulation prevent any of these things? Shouldn't we instead focus on limiting access to bomb/bioweapon precursors and securing vulnerable endpoints, since that is the solution that saves lives regardless of how AI disseminates? Regulating AI is expressly dangerous, if it expands that societal blind spot. It'd be like regulating red mercury.