Is the human doing anything flexible here? It isn't like they occasionally unclog packages plus a dozen other things. They are on the line to just unclog the packages. Likewise for most other factories. When you see clips of the human in the line, they are just doing some task someone has not made a machine for yet. There is no specific human input required here. No human touch. They are doing things like turning over the object because no one designed a flipper to turn it over yet. Mindless repetitive tasks.