If Nintendo thinks their machines are immune to parts malfunction they really need to remove their head from the clouds (okay no pun intended) Your consoles are no different than a phone, tablet computer etc...
Seriously! Wasn't there a whole thing where Japanese players towns were getting corrupted because of some glitch right when acnl came out back in 2012 over there? Things break and get stolen. Sony and Microsoft understand that people want to backup their games. I don't get why Nintendo insists on being so backwards with this.
While I do understand a lot of people like manipulating their games, I don't think this is the main reason for them doing it. They definitely want to prevent duplication of items.
And for what? Animal Crossing is not a competitive game. People who cheat or use exploits in this game only cheat themselves. This will just hurt players who don't use external resources to backup their saves. :s