Right, it didn't happen so we both can agree that porting to Switch is challenging.
I don't know, that depends entirely on the game. For example, Capcom didn't include motion controls in RE4 classic, even though that is functional in the Wii version, so there must've been some difficulty in getting them to work somehow esp when docking or undocking. Same with Bioshock and Witcher 3. I was disappointed when those games didn't come with motion controls.