This made me laugh. > Using an iPhone as a webcam is easily the best option without dropping an excess of $1,000 for professional camera gear. Using the iPhone you already own, or a recent hand-me-down, a moderate investment in lighting, and Reincubate Camo, you can get excellent results and none of the frustration and hassle that accompanies standalone webcams. I don't have an iPhone. So if I want to buy one that is…
Of course the rest of your points still stand. The article does hinge on the user having an iPhone, and the comparison isn't entirely fair.
However I think the point of the article is to say that many people have devices on hand that will give better results than splurging on webcams which won't provide much gain