MASOUTH :
Only save to another Switch? So I suppose they expect people to go buy a second if they only have 1? Sounds more like a bait and switch
Yes, that's exactly what the feature is for. It also exists in the PS4 and the Xbox One.
I've used it to transfer from my old PS4 to my PS4 Pro, and MS recently released the "Fall Update" with a new shiny transfer feature for when the Xbox One X gets released.
I've also used the feature to transfer from my old 3DS to the New 3DS. This feature is probably for the time Nintendo releases a revision for the Switch.
Another use case is: You bought a Switch and your kids are using it too. You want to play a game but can't, because your kids keep monopolizing your Switch. You decide to buy another Switch and transfer your kids' profiles to it.
Or maybe a friend or relative wanted to try out your Switch and decided to buy one of their own, and now they need to transfer their profile from your Switch to theirs.
Out of curiosity, why do you expect a "bait and switch"?
It's not like they're making you pay for a subscription, then remove important features from it.
A bait and switch would be more like MS offering "unlimited OneDrive for subscribers of Office 365", then downgrading the offer to 1TB (which they did, by the way).