Most hacks against smart devices require either proximity or some other form of direct access (port forwarding/UPnP). That being said, what if devices could be hacked up to full remote code execution and root access without direct access and from the other side of the world? And what if the number of devices susceptible to this attack could be large enough to be the next big IoT botnet?
1: See how easy IoT hacking is if you know where to look.
2: Learn how tough it is to defend against these attacks for the average user.
3: Understand why the security community must focus more on researching remote exploits.