As you can see. Object eraser does work for some part. When viewing photo on something small, like a phone screen it looks OK. But when you have a closer look, and if you were to print or enlarge the images, a ghost of the original still remains. Andnif you really wish to fix any of that, some quite powerful digital editing software is required. But for basic use, it is OK. And for most subjects would be less noticed. I did deliberately take a quite busy photos with many layers of contrasts, shadows, highlights and forms to show.this effect. A less detailed pic would erase a bit differently. I pushed the eraser limits on this one.
