while what they did wasn't the best way to do it, its part of the deal. anyone using gateway or the clone carts is automatically voiding their warranty and cannot complain when their illegal and not authorized actions lead to a brick. gateway told you this could happen, Nintendo told you this could happen. don't be so hurt and surprised when it inevitably does. anyone whos been around the block and knows how this delicate operation works will tell you its all a part of the game and sometimes others get involved before everything is ready. that's why most high profile hackers have kept their projects under wraps, even now. not just for the theivery, but for their own accidents in case they inadvertently create a kill code like this.( its easy to do on accident when we don't know everything about the system) now, for those of you who havent been in the scene long enough to remember the good ol days, we had the exact same problem with the Wii and the Ds year and years ago, its not an issue now because we've learned so much from previous mistakes and mishaps like this one.
whining and threatening to boycott a company that deals in illegal activities is like calling the cops on your drug dealer when he gives you low quality goods. its moronic. its all a part of business and is especially prominent in dirty business like this. if you're not ready for the consequenses you shouldn't be playing the game. and for the record, the consequenses could be much worse. ninty has absolute rights to confiscate any 3ds sent in containing any of this malicious code without refund or replacement and could go so far as having the 'victim' of this malicious code arrested, sued or otherwise prosicuted for piracy. which could end up being anything as small as a slap on the wrist to jail time with a huge fine.
tl;dr you knew this could happen, so quit whining. if you don't pirate, it won't happen to you.