The right to be forgotten, as it's identified and implemented in Europe, is problematic because it effectively creates an administrative role for Google, as a private sector corporation, in deciding what information users can and cannot see, but it doesn't remove that information from the Internet. We're placed in the uncomfortable position of staffing up and running an office that then makes a decision about whether or not a request to delist a URL from search results is in fact appropriate, based on the laws of 21 different jurisdictions.
You're very right. As was mentioned by Ms. Bourne-Tyson, there are people who have childhood criminal records or were indiscreet in university, and then there are people who have explicit corruption convictions or other violent crimes, or more simply, who have a history of poorly stated and poorly thought out political or personal beliefs. It's a difficult role for the private sector to be the adjudicator on that.