My point is that almost all consumer cameras these days are good enough to be used in a professional shoot—GoPro, heck even cheap consumer point-and-shoot camer

My point is that almost all consumer cameras these days are good enough to be used in a professional shoot—GoPro, heck even cheap consumer point-and-shoot cameras from Nikon or Canon can produce the same (or usually better) images, and are much cheaper than an iPhone.