I'm just guessing...
But... I don't think everyone walking down the street has one of those "black bags" to zap your iPhone.
I bet the guy setting next to your cubicle doesn't either!
It's kinda like saying some dudes some where have a new "box" that will disable the alarm and unlock any vehicle door, so why should I even bother to lock my Mercedes. And, they really do have that "box".
I'll take the thumb/finger sensor or anything else they can put on my iPhone for security.
I'll just make sure I don't sit next to 007!!