Effects caused by light leeks and other variations of exposure and process control can lead to aesthetically pleasing images. However, to produce a camera with built in light leaks or any other fault variation is tantamount to trying to give instant art, which it is not (or could be). Perhaps it should be described as an attempt at marketing the aesthetic. For most people involved in trying to produce an artistic image, it misses the point.
I can get any well built camera to have light leaks once the light seals need replacing or the camera is dropped. I fail to see what the product brings to the market other than to line the inventor's and manufacturer's pockets.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.