They have this complex system set up to show somebody a fake reality when they step out of the silo, just so they can clean the camera?

It’s a trap for skeptics, so they eliminate themselves from the silo before they can cause bigger problems.

Skeptics see cleaners acting like everything’s fine outside and think it’s a signal that the official story is a lie. So they ask to go out themselves, seemingly confirm that they were right, and send the same signal to other skeptics inside.