Nintendo recently updated the Switch to allow video capturing, and slowly games have been patched to allow it. We can now add Vertex Pop's Graceful Explosion Machine to the list - the game has been patched to add functionality.
"We have a small (but pretty cool!) update out for Graceful Explosion Machine today which adds Video Capture support for Nintendo Switch. Now when you pull of a particularly gracefulrun, you can just hold down the capture button and share.
We’re excited to check out all the cool videos you post, so please make sure to share them with us on Twitter!"