Skynet isn't goanna attack you with Terminators wielding a "phased plasma rifle in the 40W range", but will be auto-rejecting your job application, your health insurance claims, your credit score and brain washing your relatives on social media.
There’s a difference though. The “cool” Terminator Skynet pursues its own goals, and wasn’t programmed by humans to kill. The “boring” insurance-rejecting Skynet is explicitly programmed to reject insurance claims by other humans, unfortunately.
So still, no need to worry about our AI overlords, worry about people running the AI systems.
I don't see how you could possibly think this is true. Physical automation is easier to scale since you only need to solve a single problem instance and then just keep applying it on a bigger scale.
Robots work for highly predictable high speed tasks where dexterity is not an issue, like PCB pick and place.