Earlier quoted context omitted.
Yes, better than on the Switch. (now I'm awaiting legal action from Nintendo)
Better how? The detachable joycon with accelerometer control are a mechanic in some games (eg. Zelda crossbow aim). I would imagine this would be worse experience on steam deck.
Pretty much all the games I have played allowed to disable the motion controls. I think it counts towards accessibility. Personally I really dislike the whole motion control aspect so always turn them off. Zelda included.
I'm sure there are other tradeoffs as well. But would love it see what it's like on an emulator. Or maybe not, it might make running games on the original hardware feel terrible :)