If it is reported, then it will be followed up.
Drivers do have a 'rating' system, so the more incidents they have, the more likely they will be removed from driving for a short period of time.
No company will want this, so the cause will be looked in to.
For example, a recent stop short at one Southern station, with the rear set of doors off the platform, showed that if the driver didn't stop exactly in line with the 8 car stop board, but a foot or so back, then this was the result.
It was also incidents like this that showed it wasn't possible to run 4 x 2.456 units on services out of London Victoria.