This is the most critical question. The Dolphin emulator itself is perfectly legal. It is a piece of software that contains no copyrighted Nintendo code.
Furthermore, the Steam Deck handheld has changed the game. Running on a handheld device at 60 FPS is now a reality. With the right control mapping (using the Deck’s trackpad as a Wii pointer), you have a portable Wii that Nintendo never made. dolphin wii games