Cui bono?
Why does Tim Cook need to address this? To benefit Apple shareholders? To assuage the doubts of Apple customers who bought the false claims that Apple has made regarding their respect for users privacy?
Truth be told I don't think that Tim Cook as CEO of one of the richest and most powerful organizations in history needs to do anything because Apple has their customers by the balls. What are the few Apple users who even care about this issue going to do? Switch to Microsoft? Linux? Hah!
Face it, Apple users have made their bed and now they have to lie in it. People have been warning them for years about the Faustian bargain that they were making and how it was corrosive to society to entrench an entity like Apple and now here we are.