Obligatory fuck Nintendo, but don't make too much light out of this lawsuit. They're aren't attacking the legality of emulation itself (which has a ton of precedent defending it) but are instead trying to convince a judge that Yuzu is a DRM circumvention tool.
If they land a technologically-inept judge that believes decryption itself constitutes circumvention regardless of how it's used in the bigger picture, there's a decent chance the argument might have some teeth. Or, because there's no precedent for this, the lawsuit will drag on until Yuzu runs out of money and is forced to settle.
If it's within your financial means, please donate to Yuzu. If they lose this lawsuit, the precedent it sets will open up other emulators that work with encrypted ROMs (e.g. Dolphin and Ryujinx) to similar lawsuits.