Apple also pushes privacy and on-device processing;
But as for the feature itself: why on earth would you want a video uploaded somewhere else before you've even had a chance to watch it back at least once?
Because you’re showing a colleague how to use a simple inventory tracker that you’ve created in Google Sheets. Or how the new multilingual Figma templates work. Or how to batch rename a folder full of files using the command line. Or whatever, really. You already know what’s in the video because you literally just recorded it. And it doesn’t need to be polished because it’s probably just going to one coworker, who will only view it once.