Pretty poorly argued. The AI alarmists simply argue that if the super-intelligence's objective isn't defined correctly, the super-intelligence will wipe us out as a mere consequence of pursuing its objective, not that the super-intelligence will try to conquer us in a specific way like Einstein putting his cat in a cage. The alarmists' argument is analogous to humans wiping out ecosystems and species by merely doing what humans do and not by consciously trying to achieve that destruction. Many of the author's arguments stem from this fundamental mistake.