He said "no job paid any money", not Milton Friedman style guaranteed income. A lot of jobs need to pay a premium over the alternatives to get enough people to do them.
Right and that is a part of the thought experiment. How would society evolve around not being able to compensate people to do those things through money? It is just a thought experiment though and I was not trying to solve any problems, I was just wondering what jobs are the most attractive once you remove money from the equation.