They're not going to kill his system. I have this on my system, and before that, had different channels installed for SNES9X, Fceu, Genesis Plus, etc. One thing that Nintendo did fix, was in the past if you installed the downloaded VC channels (illegally), you could re-download the channels for free from the Wii Shop Channel, since you had the ticket on your system. Nintendo now also checks your purchase history, so this is (thankfully) no longer possible.