"NEW: Nintendo is suing the creators of popular Switch emulator Yuzu, saying their tech illegally circumvents Nintendo's software encryption and facilitates piracy.
Seeks damages for alleged violations and a shutdown of the emulator.
Notes 1 million copies of Tears of the Kingdom downloaded prior to game's release; says Yuzu's Patreon support doubled during that time. Basically arguing that that is proof that Yuzu's business model helps piracy flourish."
To dump the keys, third party tools rely on DRM circumventing sploits. You essentially have to hack your own device, certain versions of Switch and certain software updates are no longer susceptible. But it remains that Yuzu doesn't do any of that. Those tools and sploits were developed by others.