Why do you feel politicians and tech executives like to say automation threatens to do all these things? How do they benefit from this narrative that has zero evidence to support itself?
In the politicians case, I think there's probably a mix of motives - being seen to be aware of technological change, forward-thinking, etc. But this gives too much credence to industry promises. The threat creates initative to study the effects of automation, but often at a 10,000 foot view, overlooking the specifics of labor conditions, technological adoption, and the workers themselves (race, gender, etc).