The sensors, optics and processing on any recent iPhone leaves even $200 webcams (Brio, Elgato) in the dust. If you want a better camera, you have to go with a mirrorless or DSLR hooked up to your Mac, and these setups are finicky and require third party software. If this Just Works, it will be a massive upgrade in image quality for most people with a camera they already have, perhaps not for everyday (except if you want to reuse your old phone as you upgrade) but for that one job interview or other important meeting where you want to look your best.