You know when you have to join a Zoom call but want to check your face first, or make sure nothing too embarrassing is in frame? So you open Photo Booth or something? But that's like 5 keyboard-presses at best? Maybe a one-click thing might save you half a second or something? Why not just open Photo Booth instead? It's a macOS app that lives in your menu bar, and when you click on it you get a view from your camera.
