There are persons still needed to monitor the robots and load the products into trailers or train cars.
I believe you are wrong about that, but even if you are correct, I don't think 'robot watcher' is going to pay very well.
Build them, or program them. Failing that, learn how to repair them until replacement robots are too inexpensive to bother repair repairing.
There's always that coal mine job that's coming back, so we got that going for us.