Obviously Nintendo doesnt know crap about modders.
I can guarentee it isnt mod-proof, give it half a month this time before some geek in China opens it, pulls it out, and successfully mod's it. They already know how the software works, so it wont be anythign new to crack a hardware tahts already been cracked. No matter how mod proof they make it.
The onyl successful way to modproof it would be to solder everything onto a mainboard, and cover that mainboard with an aluminum grounding cover, and if you pull the cover off, itll short a couple key components.. hence, no-modding because its fried.