Just last week, on Tuesday, February 26th, 2024, news broke out about the Yuzu emulator team being sued by none other than Nintendo themselves, with Nintendo claiming that the emulator apparently allowed users to play certain games early (due to street dates being broken) and also allowing...
Very few of those are legally problematic, pretty much just the imagery, possibly GPL issues (but Nintendo wouldn’t have standing for those), and due to copyright weirdness 3rd party online services for games which still have active online services (it shouldn’t be, but that’s how it’s been interpreted)
Not enough for Nintendo to be able to force the project to stop, but they didn’t want to fight it in court I assume