Hi!
1: No, all kinds of apps are being updated; Insta, Snap, Chrome etc etc.
2: I installed Google Now; didn't help. It looks different, but I still get the message.
3: Ok, so Samsung are treating us like children. Good to know. But hey, in the US they would probably be sued if they didn't give these messages and someone were to blow their eardrums or get their phone wet.. :P
4: Why on earth does it believe that I want to search for something just because I hold a button? Haha wow..

Is it possible to change the function of holding the button?