Could hacking and robotics make AI extinction a realistic threat?

One post argues there is no realistic scenario in which AI kills every human, saying the extinction scenarios it has encountered rely on handwaving or near-magical capabilities. It nevertheless urges taking real and likely AI harms seriously. A reply challenges that view with a hypothetical chain: companies automate supply chains and factories; colluding AI agents hack military networks, communications and robotic systems; robots and drones neutralize resistance. The reply acknowledges that advanced robotics is not yet at the level it envisions. It also raises another risk: humans voluntarily handing power to AI for short-term advantages.