I think the lesson to be drawn here is that anyone connecting to the internet by way of your unsecured WiFi router will appear to be coming from your IP - it doesn't require any hacking skills.
Of course that could be one lesson. The other would be: that some people may think the local police are so stupid... as not to know something that simple. OR... the real lesson may be... to not believe everything you read.
Windows and apple devices not only give away the IP address that they are using.... those OS's expose the user. If the police crashed the address of a hacker based on IP address I'd guess that there was also a known connection to the addressee.... like a parent. And... what REAL hacker... uses windows and/or apple?!?!?!?
Of course everyone should protect their WiFi now-a-days. It should be both user and
guest protected....
with children and guests never allowed to use anything above guest permissions. It doesn't hurt to change your router name and passwords from time-to-time ether. But I own nothing that can't be taken from me with a gun. And guns are far much easier to obtain than the knowledge required to hack a WiFi router.
The biggest security risk to any American individual still remains... the unlocked door.