Yep, can totally see developers investing the time and money to fine tune an engine to run VR without any guarantee one will ever exist.
Be real man.
It happened on iPhone.
Try it. All games that are played on a Nintendo System have to be certified by Nintendo. If they're not, then the game can't be digitally signed, and the game won't run on Retail Switch units.
Nintendo, Sony and Microsoft have complete control over the kinds of games that are released on their system. One of the companies I worked for released a camera-based game for the PS4/XB1 that used a prop. We had to get special permission from both Sony and Microsoft to use a prop with the camera that was technically against the rules because of how the prop would need to be used was potentially dangerous. If we didn't get that permission, the game never would have been allowed to be released. If Nintendo doesn't want the Switch used as a VR headset, it won't be.
Who says Nintendo wouldn't approve a game with a VR option? It's literally just a split-screen mode. It's not the same thing.
Well, this is new.