So no, there's no legal way to use a switch emulator. At least not for playing commercial switch games, I guess you could theoretically home brew your own game to play on an emulator.
Not a lawyer but as I understand it, the case resulted in a settlement and as such no legal determination was made. They didn't prove anything in court and no precedent was set regarding the legality of emulation.
The challenge will not be hardware emulation (if it's a nvidia tegra 2 based SOC that will be easy) but hack the OS/security to make it usable.
So don't expect to play mario kart 9 on your steam deck anytime soon.
Edit: with easy i don't mean that it will not demand a really top of the line computer to run it. But that isn't completely undocumented or custom hardware, like i don't know, ps3 or sega saturn.
I’m yet to hear a moral argument for emulating current games you don’t own unless you’re poor and need to choose between buying Zelda and starving.
If you do so, the seller has one less device. If you copy a game, the seller still has the same number of games. Your analogy clearly doesn't work. A better analogy would be possible if we had Star Trek replicators: replicating a full Steam Deck.
Well, we literally invented Star Trek replicators for information, and we've seen what happened. If we had Star Trek replicators people would be complaining that replicating food, medicine, etc. is immoral because you should be paying the "original creator" for their intellectual property.
It does not entitle anyone to pirate their games, but taking your words, Nintendo is not exactly starving either, they could have spent the extra $1 on the joycons to fit them with non drifting sticks. Even if you use their replacement program, you just get another joycon with the same stick.
Given how Nintendo handled the situation with Ryujinx and Yuzu, they clearly thought it was an issue for them.