Switch 1 was feasible as its CPU was similar to the ones found on a $200 android tablet from 2018 so even a Chromebook can emulate that.
Switch 2 is comparable to a mid range modern gaming PC so we have to wait at least a decade for full speed emulation, if not more
TacoSocks@infosec.pub 2 days ago
Switch 2 GPU is similar in spec to a laptop RTX 2050 with more vram and better DLSS, I wouldn’t say that’s mid range gaming PC.
I’d say something decent will exist by the end of the decade if Nintendo can’t stop development of emulators.