I am paranoid I know, however the first thing I thought is that, as headphone can be used in a reverse way as microphones, that Apple made a secret deal with the NSA (or else...) so they will be able in a Bluetooth range to connect (as Bluetooth is far away from being secure) and listen to people. Those plugs all around are just free and easy tool for spies. Of course they could also listen to non encrypted conversations during phone calls between people using encrypted channels/tools. Am I the only one thinking about that?