The update is quite an obvious popup, and is similar to an update (which you agree to receive automatically). You didnt agree to receive it automatically becaus

The update is quite an obvious popup, and is similar to an update (which you agree to receive automatically). You didnt agree to receive it automatically because they wanted to be obscure, they made it the default for legitimate purpose. Also the privacy settings are not "obscure" there are options when updating and options in the settings menu quite visible.