Many people would not want to or can lift boxes all day, like people with back problems. The robot supervisor job could be appealing to more people. So it's not replacing but creating a different job which more people could work.
For it or against it, when people talk about robots replacing labor, this is exactly what they are talking about.
Our hope, at least mine, is that we remove drudgery and difficulty from people's lives and create new jobs to replace the ones that are lost.