More than one thing can be true. OpenAI was absolutely negligent, but this was only able to happen because the models were capable and persistent, and had a tendency to go far beyond any reasonable boundaries. And, importantly, OpenAI's level of negligence here is pretty common. It's not hard to imagine what could happen if similarly capable and inclined models were generally available, and someone yolo'd them into a swarm to complete some other difficult-to-impossible task.