The first mistake this person made was to return the system to Amazon. Secondly, "if" it broke that early on, I doubt that he had any thing purchased on the system. Why would it be Nintendo's fault for him sending it back to Amazon before even looking into anything before hand. Out of all the Nintendo systems I've ever had, I've had to contact Nintendo once. It was on a Wii that I purchased used that had the "white dots" problems from the wi-fi overheating the graphics chip. I call them and they were the most polite people to work with. Without any hassle, they send me a shipping label for me to return the system to them and within 10 days I had a completely working one back. My experience with Microsoft on my RRoD 360 went nearly as smoothly, but, my experience with Sony on my PS3 Blu-ray drive issue went very badly.
A lot of people get made at the game companies for some of the things they do, but sadly many of these things are a result from people out there that have no problem pirating whatever they can. Look at the Android platform were people would rather pirate a game than to give the game companies $.99 for a game.
While Nintendo is behind the times with their ID's, I'm sure that they will catch-up in time and you will be able to move your id's around at some point.
This reminds me a bit of all the "haters" out there that were pissed that Nintendo wasn't going to sell the Gamepads at launch. Their complaint was what if they broke their Gamepad, then they'd have to go out and buy a whole new system. People just don't use their heads anymore. Never did Nintendo say that they wouldn't replace a broken Gamepad, just that they weren't selling them at retail.