I guess because now you have no way of exploiting any bugs that might've been exploitable. Within 7 days the phone will still try to talk to others connected to

I guess because now you have no way of exploiting any bugs that might've been exploitable. Within 7 days the phone will still try to talk to others connected to its port, after 7 days it'll just charge. I assume that "power off" will also disable data over the port until the phone gets unlocked?