The camera is an optical device that along with hasselblad lenses has (many) detectable differences in the pictures taken, along with film choice. Someone shooting with a particular camera aiming for large prints is aiming for high excellence not serviceability.
there are bad cables (shielding etc) but the camera+lens+film is literally a sensor/recording device and not really comparable. Whether you like the thing they're doing is a separate consideration, but the person in the article is not looking for ok or even good results. They want everything the best it can be.
Prints are also extremely forgiving, especially viewed from a normal viewing distance, from personal experience of having made high quality prints of my photos.
But again, you can choose to spend however much you wish to to get the last bit of detail out of things.