Confirmed in an interview with the developer Obsidian by GoNintendo.
https://gonintendo.com/stories/361860-gonintendo-feature-we-chat-with-obsidian-about-the-outer-worlds
Personally, I love that this feature has become more or less standard for shooters on Switch, for those who prefer it. When done right, I feel motion controls can add so much to the gameplay experience.
The Outer Worlds launches on Nintendo Switch on the 5th of June.