I wouldn't be surprised if this backfires a bit. The reason most publishers/IP holders don't go after videos on youtube and twitch is because it's basically free advertisement for your game.

If this behavior leads to people holding back on making nintendo based content, it could fuck them over in the long run. If you were a streamer or youtuber, would you feel particularly comfortable making videos and streaming nintendo games?

I know I wouldn't. There is no guarantee that nintendo actually puts effort into determining whether you are using an emulator or not. And even for the people who do use emulators, they may not be looking to continue making nintendo content.