Unless Google deletes the articles about the incident from its index (and hey, it's possible), then the internet doesn't forget. Instead it just slowly builds personal and political opposition against them.

Or are you saying we just should be quite and let them do what they want?

How many "PR disasters" have Google had? If you google "google scandal", how many pop up? Have people stopped using Google because of those scandals? What makes this particular scandal stand up amongst those?