What happens to the person who earns their income laying bricks when an automatic bricklaying machine is built? Is it unethical for them to earn that income because they are operating the machine? What about the person who finds them people who need bricks laid because the person who lays bricks finds it hard to get good clients who aren't a pain?
I really wish people weren't so easily seduced by the labor theory of value.
I think you are arguing against a strawman. I've never heard someone suggest that the machine operator shouldn't be paid. Same for the other example who would clearly be doing labor.