Bah!
"However, would-be burglars are probably more likely to kick down a door or smash a window than to try to crash a smart lock."
Well, what if they've rooted your home network using that IoTat front door camera's, burgular alarm's or thermostat's weak security, have spotted your order as "out for delivery" using your account to spy on you, and turn up in Amazon drag asking you to app them in please?
Stupids and shinies.