Except that now we won't be able to leave those devices at home so we can't be tracked. Not everyone has a phone and not everyone has data. There are also people out there who intentionally don't use such things because of the ability for others to listen in. I do agree that for most people out there really isn't that different but there those out there who it does effect not to mention how it can strengthen the government's hold on the people.
But then think about it. Even if YOU leave the devices at home - all it does is make it a tiny bit harder for whoever's watching to track you. At least three out of four people you meet around you will also have a phone. If they record their voice, or if someone accidentally takes a picture of you, they can cross-reference with THEIR data and obtain it anyway. Even if you don't use it, others do and that's where the downfall is. On the flipside, I do agree that we should lessen the hold on people - but we have, in my opinion, bigger issues at hand.