The suggestion boils down to if users should be able to see what names people had before.
Regardless of if it's a privilege for the higher-ups, I do think that the changes should be made public; be it a list or something in the user profiles, there's no reason for them to be kept private, and it would only help others by having access to this information.
Being able to change your name is a customization, not to "run away from your past", so those against the idea were/are up to no good.