The problem with this is that Google is effectively dealing with legal principles by not using legal principles. Of course, using lawyers may end up being costly but if an individual has to use a lawyer to make a right to be forgotten claim or if an individual is referring to a matter reflected by right to be forgotten (such as an old article), then it is somewhat incumbent on google to take due care in handling of these requests.
It sounds like google's 'system' is pretty much random at best.
Biting the hand that feeds IT
