He never said that creating an emulator was illegal. He said that Nintendo is legally in the clear to do what they did. In Yuzu's case, Nintendo sued and both parties settled, and they reached an "agreement" with Ryujinx to take down its emulator.

As far as I'm aware, the Yuzu case isn't settled law as it calls into question whether the use of dumped keys to "bypass" copy protections is legal under the DMCA. This question isn't about emulation, even if it's a step required for emulation to be possible.

Since there are many issues with copyright law right now, corporations have a free pass to bully people in a multitude of ways, and the Yuzu lawsuit and Ryujinx "agreement" are just new ways of doing the same thing. All OP is saying is that lawmakers need to re-create copyright and IP laws to make them more fair and make sense so that content creators and/or homebrew devs and/or fangame creators and/or emulator devs can do their work with a far less shaky legal foundation.