I think this may be an overly cynical take - there are already exploits / tools that would allow direct piracy on the Switch itself which would no doubt perform

I think this may be an overly cynical take - there are already exploits / tools that would allow direct piracy on the Switch itself which would no doubt perform much better than any emulation. It seems far more likely that this is done just for the curiosity of doing it. There’s one fascinating outcome to me as a result of Nintendo essentially repeating two hardware generations (GameCube -> Wii, then Wii U -> Switch), which is that on the highest end gaming PCs, games for the Switch can and do run at much higher resolutions and framerates than the Switch itself is capable of. On the YouTube videos I’ve seen the games don’t appear as stable as native hardware, but they really do look tremendous. Especially Breath of the Wild.