MOT Fail/Advisory Warning Bump Stops Deteriorated or Damaged

One of the items on the advisory list for the previous MOT on my Golf was an addvisory that the rear Bump Stops had deteriorated. The bump stops sit on top of the suspension within the coil spring and are there to cushion the car & shock absorber when it reaches the limit of travel over a bump.

What does deteriorated bump stops mean? What do damaged bump stops look like?

You can see in the photos below the condition of the bump stops that were recorded as an MOT advisory - it really makes you wonder what they would need to be like to fail the MOT!

The white bump stop on the left shows a brand new one with the damaged old ones to the right showing how much they have fallen apart.

MOT Fail/Advisory Warning Bump Stops Deteriorated

Photo of MOT Fail/Advisory Warning Bump Stops damaged