Do they need to operate the cleaners manually? It seems like with just a couple of adjustments those cleaners could be automated and not requite a two people op

Do they need to operate the cleaners manually? It seems like with just a couple of adjustments those cleaners could be automated and not requite a two people operating them. They could be scheduled to run once a day, every day, half an hour before the sun comes up. One sweep back and forth and the job is done. You just need to build a few more, give them a timer and two motors, and maybe make those solar panels rows longer so you need less cleaning robots. And that's it. They could even be themselves solar powered, charging during the day when they are not working. And those people who operate them could instead go around after the "robots shift" to check for problems and fix them. Am I vastly underestimating something here?