> I feel like it would be a lot more straightforward if people just came out and said that they think piracy should be legal.
I don't believe piracy should be legal. I believe that copyright and trademarks are important for the creation of many types of interesting new works in society.
Nonetheless, I also think archiving history and having those archives (in their original format, to the closest degree possible, which is what many emulators try to achieve) widely accessible to the public is also important.
Flash memory in game cartridges degrade over time, and discs rot as well. In contrast to some here, I do not think DRM is inherently bad — preventing piracy can be important — but I do believe that DRM should be time limited. After about 10 to 15 years, I think one should be able to have a DRM-free version of whatever piece of media they purchased, be it a game, movie, TV show, etc. At that point, the console (or other device) should allow you to rip it and transfer those DRM-free files to other devices.
I don't think those files should be legally redistributable online (at least not after only one decade), but many users' consoles will break before the 10 year mark, and many consoles are not sold for more than 10 years at a time. I think requiring much more than roughly that amount of time before allowing DRM-free rips will just result in a lot of consumers not being able to play the games they purchased. I think legalizing piracy would destroy the gaming industry, but I think legally prohibiting the consumer from experiencing the media they purchased on future devices encroaches on their consumer rights and results in history being forgotten.
That said, I've never been a fan of Yuzu and Ryujinx releasing as early as they did. Approximately no new game sales have been lost due to RPCS3: by the time it became a useable enough emulator, no new PS3 games were being sold and a huge number of PS3 consoles had already stopped working. The same is true Xenia and the Xbox 360, PCSX2 and the PS2, and many other emulators. That's clearly not the case for Yuzu and Ryujinx though.
Still, while my feelings on Yuzu are somewhat negative due to when they released it, I do hope they ultimately win this lawsuit — if Yuzu isn't legal, it's very well possible that no home console emulator after the PS2 and GameCube era is legal, as they all arguably bypass DRM. Clearly, the existence of Yuzu has not harmed Nintendo all that much — they're currently the richest (though obviously not most valuable) company in Japan, with $11.44 billion in cash. The Switch has sold 139 million units and Tears of the Kingdom has sold over 20 million units. Yuzu clearly does not constitute a legitimate threat to the continuance of Nintendo making games, but Yuzu being shut down would pose a legitimate threat to the preservation of any video game released on consoles after around 2006.