Comment Being 14 does not excuse his behaviour. (Score 5, Informative) 239
This kid also made multiple video streams that showed people how to perform the cheats as well as showing the cheats in action. This is the part that raised the DMCA claims, as Epic Games claimed that the cheat videos were an unauthorized derivative works. The kid's response was to file counterclaims (although it is clear from his lawsuit response video he has no clue what filing a counterclaim actually meant). He even created a second YouTube account to get around claims/bans. Again, it is clear he knew that he was doing something wrong, but kept on doing it. This left Epic Games with no other legal alternative but to sue.
The letter from the kid's mother doesn't even try to deny the claims from Epic Games, and she even admits he was cheating. Her defense boils down to "he was 14 years old so the rules don't apply". While the law states he cannot enter into a contract, that does not mean he cannot be legally liable for his actions. On top of this it is clear that the mother also has a legal responsibility here. She says she didn't consent to him installing the game, but that does not absolve her of the responsibilities for policing her son's actions. It is very clear from the kid's response videos he has absolutely no understanding of the repercussions of his actions and is just relying on mommy to leap to his defense.
I, respectfully, disagree with Cory Doctrow here that there is a fair use claim. If the kid's mother is to be believed (that she didn't give consent) then the kid was running the game in violation of the EULA and using false accounts in violation of TOS, meaning the game footage was illegitimate. He was also running cheats on the game, making the videos unauthorized derivative works. This is something very different from a 'Let's Play' video.
While I normally hate DMCA cases, there is very clear evidence for the kid's utter disregard for the rules (especially if you watch his videos in response to the lawsuit), so I think he (and his mother) deserve to have a lesson. I doubt the letter to the Judge will be very persuasive here. It is not any kind of formal Motion to Dismiss the case, and many judges don't like it when people try to sidestep process.