A lot of surprising responses in this thread. You do not make a program(and especially not something as vital as the system software) install an update until the download is complete. What if someone has slow internet? What if they have network issues? What if you have server issues? What if a kid trips over the power cord(because the shitty parents left the power cord out where it could be tripped on)? What if the significant other turns off the device while the customer stepped away to conserve electricity? There are dozens of things that could go wrong during an update process, and making that window of vulnerability as potentially large as it takes to download the update is just asking for trouble.
Say what you want about the journalist; this is Nintendo's fuck up.
Say what you want about the journalist; this is Nintendo's fuck up.